You could sell more if you'd offer an inernationalized version. With less focus on US hollidays and starting the week with monday, like it's the ISO standard and familiar to viewers from a lot of countries. I mean...why do you start the week in the middle of the weekend? :D
@@StYxXx I agree with internationalization, but really, starting your week on Monday is just silly. We start on Sunday because a week has two ends, just as a stick or a table has two ends. If you end your week on Sunday, then Saturday is in the middle and isn't an end. #ExtremelyImportantArguments
This is the Phobos commuter tram line, which brings Martian workers from the Phobos Housing projects to the Phobos Water Well and back twice a sol. It was abandoned in 34,566 ME when the well ran dry, and the workers relocated to the Tharsis salt mines, but the tracks remained to this day.
And, if the Doom games are to be believed, gravitational stress caused by the opening of multiples portals to hell could be one of the main contributors to such grooves.
The hardest leap for many people to make is the idea that not everything - in deed hardly anything - that we see in the structure of the solar system is "historic" and happened a long time ago. Like continental drift...it's happening right now. We're just lacking the time scale to see it.
One thing a lot of sci-fi gets wrong is showing Jupiter's great red spot hundreds of years in the future, when it's currently expected to dissipate within the next few decades... EDIT: While it will change significantly in the next few decades, it won't dissepate that soon. I got the scale mixed up somehow, iirc it's more like centuries, although that would still be well within the timelines of many sci-fi movies.
Isn't it such a crazy/infinitely fascinating thought, though? Like just how it's all so insanely relative?.. to us 100 years is a long ass time..more than a lifetime.. in terms of the universe and all that, it isn't even a fraction of a fraction of a fraction of a fraction of a blink of the eye. To us, a long distance is also, 100 miles... We can know the number of miles it is... put a number on it, but we can't even grasp the distance that is a million miles not to mention the 93 million it is to the Sun. Our concept of distance is relative to what we see /can trave,l being here on Earth. It takes light a mere 8 minutes to travel that 93 million miles from the Sun to here.. which is pretty much instantaneously from its perspective or rather, a persons perspective if they were to somehow traveling at the speed of light(I believe that's correct?) To try and conceive/fathom a single light year (just ONE of the 93 BILLION we believe to be the observable universe is across...) is a distance so, so, so very far beyond anything ANY of us could ever even BEGIN to fathom, it's almost unbelievable. Sorry lol. I smoked earlier, and when I do and then watch/think about stuff like this.. or see someone already discussing it ( time/space/physics and all that) as you were, I get all super into it haha. I mean, who doesn't enjoy discussing stuff like this? Well, I guess besides people like my friend Nessa, who end up having an existential crisis / panic attack every time they think/talk about any of it.
Yes, conceptualization is difficult for humans which is why we have religion to begin with. Makes the scary beyond less scary with lies they tell themselves about their imaginary friend in the sky.
@@ENCHANTMEN_ There is NO CHANCE in Hell that it is going to dissipate in the next few Decades!.. lmao.. where did You read this assertion?, I'm all for "open thought".. but sometimes bad ideas need to be reigned in!
Totally. However, it's important to remember one day we likely will find evidence of intelligent life if it exists. We can't become nay-sayers. (We also can't become crazy UFO wack jobs, but I digress)
Is it 'INTERNATIONAL SELL ME A CALENDAR DAY'? SciShow, SciShow Space, PBS Eons, Journey to the Microcosmos... Yall having an internal side bet about which page will sell more?
As soon as Hank posed the question I thought "hmm they look like stretch marks, maybe Mars is causing it" and boom there it was later in the video. I've never felt more accomplished in my life, which is sad... :D
@TrundleTheGreat Whoa easy there fella, why be toxic for absolutely no reason? I didn't claim they stole my idea or something. I just said I made a lucky correct educated guess.
Aha! I see that you added the Saturnian moon Hyperion to your new calendar. That's great. Hyperion, like a giant slush ball in space with an impact crater more than half it's size, is mysteriously & spectacularly frozen in mid-splash! Interestingly enough, on the surface of Mars, Phobos & Deimos appear to travel in opposite directions; because one travels faster than planet's the rotation and the other slower.
If Phobos is that small, wouldn't any impact strong enough to make a crater that big be MUCH stronger than Phobos' weak gravity? I would figure almost everything would be blasted away. And in the presented scenario, if the gravity really is that weak, the debris shouldn't gouge very strongly into the surface. After all, it isn't enough to just be traveling across something; you need downward force, too. Shouldn't the gouging would be proportionate to the normal force? And very weak gravity means a very weak normal force. And for those boulders to not be flung into Mars' gravity, they'd have to be moving pretty slow. So even if their speed is sapped slowly, it shouldn't take them long to come to a stop. If I had to pick, I would say the second hypothesis is more likely.
The amount of force needed to make a crater of that size would be lower, but that doesn't mean you can't make a crater of that size without destroying the object.
Stretch marks caused by tidal forces sounds about right. Somewhat like an egg, Phobos can take a hammer blow to the end without losing structural integrity - but the constant stretching and squeezing is too much.
@@thepizzaguy8477 If I knew what it was, I'd be telling everyone. I just know many things that it is not. This type of phenomenon is present on many planetary bodies, and no planetary body is "like an egg;" Not even somewhat.
I love the bouncing rocks graphics! And the first time I saw those grooves in an image, my mind jumped to tidal disruption. Maybe I chose the wrong career, and should have picked planetology over childcare. Nah, kids are a kick!
I'm looking forward to data from JAXA's MMX probe! It will be great to know more about Phobos's composition. Seems like a prime location for a gas station & tether counterweight.
Phobos was also the name of one of the four horses that drew the War Chariot of Ares. Who names his son after his horse, and how did it affect the fraternal relationship? "Dad liked me best; he named you after his horse!"
In 30 to 50 million years humans might have had the time to mine phobos away or add thrusters to accelerate it. I'd suggest to place solar arrays and use the energy to power lasers, which vaporize and ionize the rock (not Dwayne), then accelerate that ionized rock away with enough force to escape the gravitational influence of Mars. (or just any useful amount of force, since it really doesn't pose a lot of danger) If this thruster array runs long enough it will keep phobos in orbit
@@con.troller4183 nah it won't be ripped apart. (showing the first cracks) Nah its just stretching a bit. (cracking apart) Nah it won't crack apart further. (cracks into smaller pieces) Well okay, but the pieces won't enter the atmosphere (first debris enters the atmosphere) Well, now we have a lot of wishing stars, but it won't be a big deal. (first large impacts) Uh that's a completely normal to happen, all planets get hit by meteors at some point. (large phobos chunks impact Mars) 🔥🔥🔥🔥aaaaahh! I mean... Well sometimes people catch fire...
If there is ever any sizable human population on Mars eith a reasonable amount of interplanetary travel. Then Phobos stands to be mined for propellant mass. And possibly for industrial ores used in orbital industries.
@@stvrob6320 at the current rate of idiocy... most likely not. my comment was meant in a theoretical way. if humanity doesn't manage to extinct itself, there's no reason why there shouldn't be humans around in 50 million years. although they would most likely look different to us. how they'd look is not possible to say, since there are way too many variables.
Imagine how cool it would've looked if we got a Shoemaker Levvy view of that collision with Phobos. Also... woo boy... the history of our solar system and its heavenly bodies is anything if not disquieting. Next time an asteroid gets pulled into Earth's orbit I can only hope good ol' Luna face-tanks it for the team.
There's also the unanswered question of whether Mars is really a planet or a moon of a planet that broke up early in the development of our solar system. For instance, it's core is not like Earth's, the magnetic fields are wonky and all over the place. Lots of evidence of terrain deformation. Could Mars and Phobos both be a pair of moons, one of which slowly disintegrated, and whose remnants are now orbiting Mars? Ever since Pluto had it's planet status removed, there have been more questions than answers floating through my mind!
Thanks. If there are human [Martian?] descendants on Mars 30-50 million years from now, and they can't figure out how to handle a little rock like Phobos, then too bad. That's enough time for civilizations to rise, fall, & rise again many thousands of times over. If humanity can't maintain some kind of minimal progress, then they're just gonna get hammered anywhere they go. tavi.
it depends where are the settlements. Phobos is so low orbit that it's no longer visible when approaching the poles. Although this time before impact only matters in the actual conditions so it's probably under-estimated as exploiting this moon or changing Mars atmosphere will accelerate the phenomenon.
If things go well, in 30-50 million years we probably will have disassembled Phobos for raw materials, so there's a big "not if we do it first" layer to this story.
@@dynamicworlds1 I like your take, not if we do it first, but destruction feed creation. In another comment I stated.... "If there are any people on Mars in 30-50 million years. I dont think Phobos raining down on them will be a problem, because in 10 million years Mars inhabitants will have likely mined it for a Martian space station and will have put the station and what remains of Phobos into a less risky orbit. " I would think even bits of the moon would be ionised and used as propellant to bring it to a more useful and less risky orbit.
@@kreynolds1123 yeah, once the scientists are mostly done studying it, I'd rather have an O'Neal cylinder or solar power collector or something like that than an ugly, battered, lifeless rock on a collision course with Mars, and the more we can get raw materials from places like that, the more we can leave places that support life, are scientifically interesting, or have a natural beauty untouched, and if you're building things in space, material you don't have to drag up from the bottom of a planetary gravity well is very useful.
@@dynamicworlds1 so I take it you'd support a mining phobos for its silicon to make solar panels to build up a Martian space based solar power station beaming power down through the long martian nights.
@@staley101 most of them aren't _that_ had. I have enough hope that maybe future generations might learn something from the not so distant past. But thirty million years? If the species survives that long, I can't imagine much we do now will have a significant impact. Or that "humans" as we know them will still even exist
In the illustration of Mars, Phobos and Deimos, the shapes of Phobos and Deimos appear to be parts of what was once one whole object. Is there any credence to that?
The bounding pieces theory makes no sense. Theyre not trails of bounces. The pieces would have to be deeply gouging along the surface, all the way around the moon, sometimes twice, all in nearly perfectly parallel courses. Nah. That one’s a stinker, imo
Is it scientifically accurate to call anything other than the Moon as "moon"? I mean, the correct term is (as far as my knowledge goes) a Natural Satellite. Moon would be the name we gave Earth's Natural Satellite, just like Phobos and Deimos are the names we gave Mars' Natural Satellites. I'm asking because I want to know if its okay to, scientifically speaking, call Phobos a "Moon" when "Moon" is not a term, its a name.
Earth's moon is also named Luna, and moon is usually a generic term not a name, hence it being correctly lowercase in English. Earth itself is aka Terra. Our sun is aka Sol, which going back to your original point, means any other "solar system" we might discover should probably be classified differently. But then again, according to my first point, "solar" being lowercase does make it functionally generic... shrug.
So what would be an unnatural satellite? Actually, moon with a lower case would apply to any minor body orbiting a larger body (hence Earth is a moon of the Sun). It's only confused ignorant humans that use the description of Earth's moon as Moon (and various cultures have different names for this moon anyway)
@@bobjoatmon1993 the earth isn't a moon of the sun, it's a planet. An unnatural satellite would be something like a geostationary TV satellite, GPS, sputnik
@@clarabisson7299 well it depends o which dictionary or how much common sense you have as to whether you can say any minor object orbiting a major object is a moon of the major object. Only quibblers don't get that point.
Hank Green, you are just the most adorable "widdle" nerd, with your Phobos, flanked by a "widdle Mars", merry month of May calendar page...The context is cuteness!😘
Would Phobos tearing apart form a hail of meteorite-like impacts on the surface of Mars that would dissipate fairly quickly on an astronomical or geological scale, or would it form a ring, like the ones around Jupiter and Saturn? Is Mars big enough to form rings, or is that more of a gas giant feature?
I'm guessing it would form a ring, and if the ring continues to approach the planet, there will be a lot of violence on the martian surface. Last I heard, even Saturn's rings are temporary on astronomical time scales, and they'll be eaten eventually.
Yes, a ring was what I thought of, too. Though without Saturn-style shepherd moons to keep it stable, it would dissipate after some, I dunno, thousands of years.
Thanks for yet another interesting video, well and lucidly presented. My mind wandered bit thinking about the names of those moons. It brought up from memory recollection of a scific short story read long ago--too long to recall title or author. Human explorer on Mars found cactus like vegetation growing in some locations. That was surprising enough. But they were baffled by the way that so many plants were chopped off at around 8 feet from the ground, while others not in direct lines with them had gouges on one side or its opposite at the same height. As they pondered this, a small object traveling fast swept past--just at the right level. After observing this rapid transit a few times, the scientists conjectured that they were seeing a highly unlikely MOON orbiting unbelievably close to the Martian surface. Claiming right of naming for this discovery, keeping in the spirit of the previously known satellites, they named it Bottomos.
googling for ""Bottomos" mars moon" led me to a scifi.stackexchange link with a similar story which answer links to the book "The Holes Around Mars" by Jerome Bixby
@@Rodrigo-xf2oe Thanks for that lead. My memory of what I read is a bit murky. I think I read it in an anthology sometime in the early Sixties. I am pretty sure that the story was about plants, not rocks--but I might be mistaken. Or, it may be a case of two writers using the same basic plot. I'll try to find the Bixby story and read it.
You nailed it. Using your clue, I found an audio version of the story on UA-cam. My memory--amazing after so long--I must have been 14 when I saw the story in an anthology--was mostly correct, though there are more rocks than cacti involved. Hearing it was enjoyable. I recommend it. What amazes and annoys me is how I could recall details from that long -ago reading but now.....I read China Mieville's novel Perdido Street Station 5 years ago and decided to read it again. Halfway through, I have to take it as an entirely new experience since not a single scene, situation or character is what I thought I ought to recognize. Oh, what a huge difference being 75 instead of 14 makes!
@@greggi47 I have had the same experience as you when it comes to remembering things that I read as a teenager compared to things I have read fairly recently. I think it’s got to do with the stronger impression that something that is novel makes on our brains as compared to things that seem less novel. When you’re a teenager, every idea is novel. When you’re in your 70s, as we are, not so much.
@@fleetskipper1810 That's a reasonable explanation. It also has the benefit of letting me see the experience as a positive one, not a signal of dotage.
Somehow, I doubt that, even if humanity LASTS 30-50 million years, a small meteor shower will not be an issue for the people living there... Just a thought.
well, I'm pretty sure Phobos is the same size as the asteroid that ended the dinosaurs, but if humanity survive itself for another few million years, it can survive a meteorite
@Tech Priestess Micaela isn't there already discussion of doing this as part of Mars initial colonization? Since Phobos could be used as a orbital staging base?
The stuff that falls down isn't the problem. It's the millions of little pieces that stay up there for awhile, scattered all over at orbital velocity that will make any travel to/from the planet's surface an issue.
(Thank you for this video! ) It's seems to me that pieces of the object which impacted Phobos and caused the crater, caused the 'scrape marks', NOT from rocks bouncing out of the crater but from high speed rocks flying past and scraping the surface of the moon. (My assumption is that the space object was not a singular solid rock, but more like the asteroid from the movie Armageddon. ) The crater doesn't seem to be symmetrical, and that suggests that there would be more rocks flying past Phobos one one side than the other. If Phobos were rotating towards the object, that also would bias scrape marks to one side of the moon. I'd also hazard a guess that the inibial, big impact changed the rotation of Phobos significantly and the perpendicular scrape marks were from the 'tail' of the object that hit it. (My assumption is that Mars' gravity started breaking up the object before it hit Phobos.)
Now I’m itching to know about the vicissitudes of the line between orbiting bodies merely colliding (crumbling, tumbling, scraping, scratching, smashing, grazing,..) and colliding with chemistry (you’ll have to forgive my ignorance of terminology; here I mean impacts that result in explosions, ignition of material, and other strongly thermal-slash-chemical reactions). What draws the line between KA-WHAM and KA-BOOM?
What if we merge Phobos into Deimos? Make one slightly larger moon for Mars and then put it into a more stable orbit? Probably many decades away technology but what if?
2:50 lol I’m imagining someone narrowly avoiding a flying boulder, wiping their brow and the same boulder reappearing over the horizon at a slightly different angle and flying at them again
@@freemind.. Yeah, but that would happen over time, during which we can replenish the gasses. Mars does have some mass, therefore gravity, so it would keep the gasses bound to it. What it lacks is a magnetic field, and the solar wind ionizes the atmosphere stripping it away. Granted, you would need a lot of gasses to have 1 atmosphere of pressure, but a lot of carbon dioxide is trapped in soil and dry ice, every bit of it helps.
@@Daniel_cheems- CO2 is such a tiny portion of atmospheric gases. Water vapour is by far the most crucial... you are correct either way in saying that every little bit helps. It is doubtful that a chunk of porous rock in space would contain much co2 at all.
@@Daniel_cheems- What we were all taught about planetary magnetic fields is completely incorrect. The reason Mars has no magnetic field is that its moons are too small to generate any tidal pull, and there are no other celestial bodies of significant size to to provide tidal influence. The field is not created at the core. It is produced in the crust and is technically a piezoelectric field produced by the mechanical stress on crystalline crustal material (usually quartz-based). Mars doesn't receive tidal influence.. thus, no magnetic field. Venus is in the same boat.. no moons.. no field. Mercury has no moon, but is close enough to experience influence from the Sun.. thus, Mercury has a magnetic field (though about 1% the strength of ours).
@@Globovoyeur yep! they presumably get progressively smaller with each iteration but it should happen a few more times if that's what's happening. when we get there we can see if phobos and deimos are made of the same material and how old the rock is.
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Can you guys make a version of the calendar for Europe where the week starts with Monday?
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@@321CatboxWA You know, American calendar is like: Sunday, Monday, Tuesday ... Saturday But Europen calendars start with Monday and end on Sunday
@ Yeah I'm not sure why our calendars do that. Most Americans would say "the week" starts on Monday, the start of a work/school week. With respect to religion, the day of rest is mostly "observed" on Sunday in the US though some regions are very Saturday-oriented (Adventists). Funnily, in 321 Emperor Constantine decreed the Sabbath to be "on the day of the Sun," so this argument has been going on for a longg time.
I've always wondered if the great canyons of Mars were created when a moon struck the planet, sending the moon off as two pieces, becoming Phobos and Deimos.
Valles Marineris was created by stretching of the crust by the huge volcanic Tharsis region to it's North West. Three of the largest volcanoes in the Solar system run parallel, incluing the biggest of all, Olympus Mons. The lack of plate tectonics on Mars means once in place it couldn't move, just get bigger and bigger.
@@bazpearce9993 the contours of the enormous crevice look nothing like the processes that you describe, more like an unimaginably powerful electrical discharge.
I used to think Phobos and Deimos were captured asteroid too but their orbits are too close to the plane of Mars' equator for them to both just happen to line up that way if they were captured asteroids. Moons that orbit along the plane of a planet's equator are typically moons that formed along with the planet or were formed from parts of the planet being spun off into space by an impact or some other forces.
@@stuartaaron613 True but don't Deimos and Phobos orbit in basically the same plane (as in if you were to trace their orbits around Mars and look at their orbits side on the two orbital paths would almost line up)? When we look at the captured asteroid moons of Jupiter we see moons with wild and chaotic orbits that are notably different from the major moons which likely formed along with Jupiter.
@@CStone-xn4oy I've deleted my replies because I realized that I was incorrect about the orbit of Deimos. It does orbit in the same direction as Phobos. Therefore it is possible that the two moons are natural satellites of Mars.
I said immediately that the lines were caused by Phobos being so far inside of the Mars' gravity well and that these lines are actually "stretch marks" caused by the resulting tidal forces.
... yeeeesss.... rocks falling down hills definitely leave behind tracks. Weather and plants tends to erase them eventually but they're definitely there after it happens...
None of those hypotheses are correct. Mars most certainly does not impart enough tidal forces on Phobos to "tear it apart." It is not happening and will never happen. It will be torn apart by Mars' atmosphere before its tidal forces.
Hi Hank! I'm suddenly curious -- what if Mars had three moons instead of two? It's not like mythological Mars has any triplet children so what would Mr. Hall have named them instead?
If we have enough people living on Mars to make the destruction of Phobos a problem, we probably have the means to move Phobos (unless it really is just a pile of rubble, in which case we should try to crash it 𝘣𝘦𝘧𝘰𝘳𝘦 colonizing Mars.
Aren't there some scientists that think Phobos is either the core of a destroyed planet or the core of a planet that never formed? I thought Phobos was theorized to be a (relatively) solid chunk of metallic composition? EDIT: Nvm. I was thinking of 16 Psyche.
If there are any people on Mars in 30-50 million years. I dont think Phobos raining down on them will be a problem, because in 10 million years, Mars inhabitants will have likely mined it for a Martian space station and will have put the station an Phobos into a less risky orbit.
"People" in 30 million years? 3 million years ago "we" were australopithecus. In 30 million years we'll be either extinct or changed into something that does not resemble "people" at all.
@@nunofoo8620 Yeah, I used people loosly refering to descendants of today's modern humans. But what really defines a people or persons doesn't require a great stretch to apply to human descendants.
Every time a moon gets grooves gets carved into it, it's Phobot House. Every time a corpse is desecrated on school property, it's Phobot House. PHOBOOOOOTTTT HOUUUUUUUUUSE!
I am just learning about Mars' moons and I have questions. Do Mars' moons have phases? If there was water on mars, how would two moons affect the tides. And lastly (but leastly) how would two moons affect a werewolf's transformation cycle?
It's called "sputtering" and is an artifact of electrical discharge machining. When the discharge plate moves beneath the electrical arc, that is what you get. It's also whey there are "crater chains" on so many planets, moons, and asteroids in our solar system. They are evidence of electrical arc discharges.
Truly, the only thing that makes me sad about my own death and subsequent non-existence is that I’ll never get to see the far, far, far future of humankind and the ways we’ll hopefully become an interplanetary and interstellar species over the next 50 million years. I’d really love to know what the distant future holds. Other than that, I’m perfectly happy to cease existing when my time comes.
I wish I could feel confident that something that our species has contributed to knowledge and civilization's good developments will survive that long. That would make me feel good, that I'm part of something that will continue to grow and develop and improve. I don't have to see it, either. I just wish I could feel more confident that it's a good future for Earth life, rather than a self-destructive one.
Most likely Phobos and Deimos were formed by a ring of material ejected from Mars itself in the deep past (from the giant impact that formed Hellas crater or the Northern depression). This would explain how they got into to orbit as well as why they are both loose piles of rubble. Both of them likely coalesced near the geostationary orbit of Mars, with Phobos just inside it and Deimos just outside it. In the ~ 2-3billions years since tidal forces have worked them in opposite directions, with Phobos slowly approaching Mars, while Deimos getting further away (in the same way Earth' Moon is getting further away). It is even possible there were other similar moons or Mars which were inside Phobos but have already been pulled apart and collided with Mars
It was the impact of the meteor that hit it. If you look at all the pictures we have the moon, it is clear that every track we see is is a straight line without tread marks. All of which originate from the impact crater. That is my best guess from looking at the photos.
If people are living on Mars in 30-50 million years and haven't utilized both Phobos and Deimos, I don't know what they're thinking. They're an enormous treasure trove of orbital material.
Head to complexlycalendars.com/products/scishowspace to buy your 2023 SciShow Space calendar today!
beautiful! 😍
Shut up and take my money!
You could sell more if you'd offer an inernationalized version. With less focus on US hollidays and starting the week with monday, like it's the ISO standard and familiar to viewers from a lot of countries. I mean...why do you start the week in the middle of the weekend? :D
FYI, my browser is convinced this site contains malware and is blocking it. Might want to look into what's causing that.
@@StYxXx I agree with internationalization, but really, starting your week on Monday is just silly. We start on Sunday because a week has two ends, just as a stick or a table has two ends. If you end your week on Sunday, then Saturday is in the middle and isn't an end. #ExtremelyImportantArguments
This is the Phobos commuter tram line, which brings Martian workers from the Phobos Housing projects to the Phobos Water Well and back twice a sol. It was abandoned in 34,566 ME when the well ran dry, and the workers relocated to the Tharsis salt mines, but the tracks remained to this day.
He doesn't say anything about Phobos monolith. Buz Aldrin mentioned it but not this guy. He must think it's less interesting than the lines. It's not
Hmmmm.....
What color is the sky in the world that you live in ?
Cool story bruh
Oh! I like your creativity!
From the sounds of it, butterscotch.
And, if the Doom games are to be believed, gravitational stress caused by the opening of multiples portals to hell could be one of the main contributors to such grooves.
We should shoot a hole into the surface of Mars.
Seeing as how they’re actually the Doom Interactive Documentaries, I’d say you’re right
Solid science A+
I like The Rock's Doom film, it was fun :p
Ya, when the guy got infinity firing the BFG causing the lines....
Multiple traumatic events in my past explain my phobias, too.
mood
🤣🤣🤣
Hahahaha-good one!
well done
IKR 🤣😂
The hardest leap for many people to make is the idea that not everything - in deed hardly anything - that we see in the structure of the solar system is "historic" and happened a long time ago. Like continental drift...it's happening right now. We're just lacking the time scale to see it.
One thing a lot of sci-fi gets wrong is showing Jupiter's great red spot hundreds of years in the future, when it's currently expected to dissipate within the next few decades...
EDIT: While it will change significantly in the next few decades, it won't dissepate that soon. I got the scale mixed up somehow, iirc it's more like centuries, although that would still be well within the timelines of many sci-fi movies.
Isn't it such a crazy/infinitely fascinating thought, though? Like just how it's all so insanely relative?.. to us 100 years is a long ass time..more than a lifetime.. in terms of the universe and all that, it isn't even a fraction of a fraction of a fraction of a fraction of a blink of the eye. To us, a long distance is also, 100 miles... We can know the number of miles it is... put a number on it, but we can't even grasp the distance that is a million miles not to mention the 93 million it is to the Sun. Our concept of distance is relative to what we see /can trave,l being here on Earth. It takes light a mere 8 minutes to travel that 93 million miles from the Sun to here.. which is pretty much instantaneously from its perspective or rather, a persons perspective if they were to somehow traveling at the speed of light(I believe that's correct?) To try and conceive/fathom a single light year (just ONE of the 93 BILLION we believe to be the observable universe is across...) is a distance so, so, so very far beyond anything ANY of us could ever even BEGIN to fathom, it's almost unbelievable. Sorry lol. I smoked earlier, and when I do and then watch/think about stuff like this.. or see someone already discussing it ( time/space/physics and all that) as you were, I get all super into it haha. I mean, who doesn't enjoy discussing stuff like this? Well, I guess besides people like my friend Nessa, who end up having an existential crisis / panic attack every time they think/talk about any of it.
Yes, conceptualization is difficult for humans which is why we have religion to begin with. Makes the scary beyond less scary with lies they tell themselves about their imaginary friend in the sky.
@@ENCHANTMEN_ There is absolutely no evidence to back up this assertion.
@@ENCHANTMEN_ There is NO CHANCE in Hell that it is going to dissipate in the next few Decades!.. lmao.. where did You read this assertion?, I'm all for "open thought".. but sometimes bad ideas need to be reigned in!
"Phobos suffered from multiple traumatic events in the past."
Me too, Phobos...Me too...
The canals-on-Mars guy would have had a field day with these tracks.
Totally.
However, it's important to remember one day we likely will find evidence of intelligent life if it exists. We can't become nay-sayers. (We also can't become crazy UFO wack jobs, but I digress)
Is it 'INTERNATIONAL SELL ME A CALENDAR DAY'? SciShow, SciShow Space, PBS Eons, Journey to the Microcosmos... Yall having an internal side bet about which page will sell more?
They're all Complexly shows so it makes sense to sell different calendars and see which ones are the most successful.
I almost named my two oldest cats Phobos and Deimos, sadly Midnight (Deimos) is no longer with us 😢 He was 13, RIP Lil buddy 2/14/09 - 4/3/22
My condolences. Good hunting, Deimos, wherever you bound.
@@MadMorgie6318 Actually his name was Midnight, I was going to call him Deimos
@@mirthenary didnt ask
@@AqilDaiyan Didn't ask you to reply either, get lost
@@mirthenary Your cat got lost?
As soon as Hank posed the question I thought "hmm they look like stretch marks, maybe Mars is causing it" and boom there it was later in the video. I've never felt more accomplished in my life, which is sad... :D
I heard about a similar phenomena in Jupiter's ice moons
You are a very clever person!
You peaked🗻
Yooo me too!! I was like, "tidal forces pulling it apart?" and it was! High five, Emre 🖐
@TrundleTheGreat Whoa easy there fella, why be toxic for absolutely no reason? I didn't claim they stole my idea or something. I just said I made a lucky correct educated guess.
You had me at ominous
You had me at The
'The Ominous' -Scishow Space 2022
It was the bigass arrows, for me.
@@gavinvalentino1313 I don't believe that arrows have a bigass.
Aha! I see that you added the Saturnian moon Hyperion to your new calendar. That's great.
Hyperion, like a giant slush ball in space with an impact crater more than half it's size, is mysteriously & spectacularly frozen in mid-splash!
Interestingly enough, on the surface of Mars, Phobos & Deimos appear to travel in opposite directions; because one travels faster than planet's the rotation and the other slower.
If Phobos is that small, wouldn't any impact strong enough to make a crater that big be MUCH stronger than Phobos' weak gravity? I would figure almost everything would be blasted away. And in the presented scenario, if the gravity really is that weak, the debris shouldn't gouge very strongly into the surface. After all, it isn't enough to just be traveling across something; you need downward force, too. Shouldn't the gouging would be proportionate to the normal force? And very weak gravity means a very weak normal force. And for those boulders to not be flung into Mars' gravity, they'd have to be moving pretty slow. So even if their speed is sapped slowly, it shouldn't take them long to come to a stop. If I had to pick, I would say the second hypothesis is more likely.
Like one billiard ball being hit by another, Phobos would bounce.
I agree. The rolling boulders hypothesis didn't work for me, either.
I assume that the impact happened before Phobos was captured by Mars.
The amount of force needed to make a crater of that size would be lower, but that doesn't mean you can't make a crater of that size without destroying the object.
Also the gravity on Phobos seems to vary a lot depending on the location because of its shape and the gravity of Mars.
Stretch marks caused by tidal forces sounds about right. Somewhat like an egg, Phobos can take a hammer blow to the end without losing structural integrity - but the constant stretching and squeezing is too much.
yeah because plantes and eggs...
The physics simply isn't there. This is not what is happening to Phobos.
@@-108- whats your idea, wise astrophysicist?
@@-108- please expand.
@@thepizzaguy8477 If I knew what it was, I'd be telling everyone. I just know many things that it is not. This type of phenomenon is present on many planetary bodies, and no planetary body is "like an egg;" Not even somewhat.
Remember that Phobos orbital period is about 23 hour long, or about 1 hour less than Mars day.
Wait is a mars day 24hrs? Is a Mars day the same as an earth day?
@@JustLilGecko The Martian day is slightly longer that Earth's day at 24h 39 minutes and 35 second for the Solar day.
What happens if we don't remember ?
I love the bouncing rocks graphics!
And the first time I saw those grooves in an image, my mind jumped to tidal disruption. Maybe I chose the wrong career, and should have picked planetology over childcare. Nah, kids are a kick!
I'm looking forward to data from JAXA's MMX probe! It will be great to know more about Phobos's composition. Seems like a prime location for a gas station & tether counterweight.
Phobos was also the name of one of the four horses that drew the War Chariot of Ares. Who names his son after his horse, and how did it affect the fraternal relationship? "Dad liked me best; he named you after his horse!"
Indiana Jones was named after the dog, so it checks out
I haven't found this anywhere. Can you quote a source?
To be fair, mars was only good for war
It's like that joke "Dad, why is my brother named Phobos?".
Lots of people value their horses more than their children. Just saying.
In 30 to 50 million years humans might have had the time to mine phobos away or add thrusters to accelerate it.
I'd suggest to place solar arrays and use the energy to power lasers, which vaporize and ionize the rock (not Dwayne), then accelerate that ionized rock away with enough force to escape the gravitational influence of Mars. (or just any useful amount of force, since it really doesn't pose a lot of danger)
If this thruster array runs long enough it will keep phobos in orbit
If the Phobos Disintegration deniers don't foil their plans, of course.
@@con.troller4183 nah it won't be ripped apart.
(showing the first cracks)
Nah its just stretching a bit.
(cracking apart)
Nah it won't crack apart further.
(cracks into smaller pieces)
Well okay, but the pieces won't enter the atmosphere
(first debris enters the atmosphere)
Well, now we have a lot of wishing stars, but it won't be a big deal.
(first large impacts)
Uh that's a completely normal to happen, all planets get hit by meteors at some point.
(large phobos chunks impact Mars)
🔥🔥🔥🔥aaaaahh! I mean... Well sometimes people catch fire...
If there is ever any sizable human population on Mars eith a reasonable amount of interplanetary travel. Then Phobos stands to be mined for propellant mass. And possibly for industrial ores used in orbital industries.
Do you honestly think there will be humans in 30 to 50 million years?
@@stvrob6320 at the current rate of idiocy... most likely not.
my comment was meant in a theoretical way.
if humanity doesn't manage to extinct itself, there's no reason why there shouldn't be humans around in 50 million years.
although they would most likely look different to us.
how they'd look is not possible to say, since there are way too many variables.
Imagine how cool it would've looked if we got a Shoemaker Levvy view of that collision with Phobos. Also... woo boy... the history of our solar system and its heavenly bodies is anything if not disquieting. Next time an asteroid gets pulled into Earth's orbit I can only hope good ol' Luna face-tanks it for the team.
There's also the unanswered question of whether Mars is really a planet or a moon of a planet that broke up early in the development of our solar system. For instance, it's core is not like Earth's, the magnetic fields are wonky and all over the place. Lots of evidence of terrain deformation. Could Mars and Phobos both be a pair of moons, one of which slowly disintegrated, and whose remnants are now orbiting Mars? Ever since Pluto had it's planet status removed, there have been more questions than answers floating through my mind!
Mars is a planet now.
Thanks. If there are human [Martian?] descendants on Mars 30-50 million years from now, and they can't figure out how to handle a little rock like Phobos, then too bad. That's enough time for civilizations to rise, fall, & rise again many thousands of times over. If humanity can't maintain some kind of minimal progress, then they're just gonna get hammered anywhere they go. tavi.
You stopped short of saying the statement is ridiculous, which it is. SciShow was pandering to the 20-somethings.
Gonna end up in the asteroid belt completely stoned.
@@sid2112 Yep. Gonna end up a big ole pile o' them stones. ;) tavi.
it depends where are the settlements. Phobos is so low orbit that it's no longer visible when approaching the poles.
Although this time before impact only matters in the actual conditions so it's probably under-estimated as exploiting this moon or changing Mars atmosphere will accelerate the phenomenon.
30-50m years is enough for whole species to be wiped out for new ones to take their place.
30 to 50 million years until Mars pulls it's moon apart.
But I wanna see it now!
If things go well, in 30-50 million years we probably will have disassembled Phobos for raw materials, so there's a big "not if we do it first" layer to this story.
watch the expanse, it happens at season two
@@dynamicworlds1 I like your take, not if we do it first, but destruction feed creation.
In another comment I stated....
"If there are any people on Mars in 30-50 million years. I dont think Phobos raining down on them will be a problem, because in 10 million years Mars inhabitants will have likely mined it for a Martian space station and will have put the station and what remains of Phobos into a less risky orbit. "
I would think even bits of the moon would be ionised and used as propellant to bring it to a more useful and less risky orbit.
@@kreynolds1123 yeah, once the scientists are mostly done studying it, I'd rather have an O'Neal cylinder or solar power collector or something like that than an ugly, battered, lifeless rock on a collision course with Mars, and the more we can get raw materials from places like that, the more we can leave places that support life, are scientifically interesting, or have a natural beauty untouched, and if you're building things in space, material you don't have to drag up from the bottom of a planetary gravity well is very useful.
@@dynamicworlds1 so I take it you'd support a mining phobos for its silicon to make solar panels to build up a Martian space based solar power station beaming power down through the long martian nights.
Y'know, I don't think I'm concerned with the well-being of humans thirty million years from now
I'm barely concerned with most humans alive today.
@@staley101 most of them aren't _that_ had. I have enough hope that maybe future generations might learn something from the not so distant past. But thirty million years? If the species survives that long, I can't imagine much we do now will have a significant impact. Or that "humans" as we know them will still even exist
@@staley101 you sound like Sir Sic
@@kellydalstok8900 i don't know who that is 😕
Heartless
In the illustration of Mars, Phobos and Deimos, the shapes of Phobos and Deimos appear to be parts of what was once one whole object. Is there any credence to that?
The bounding pieces theory makes no sense.
Theyre not trails of bounces.
The pieces would have to be deeply gouging along the surface, all the way around the moon, sometimes twice, all in nearly perfectly parallel courses.
Nah. That one’s a stinker, imo
Moon themed calendar. So one that divides the year in to moon cycles? Revolutionary!
Is it scientifically accurate to call anything other than the Moon as "moon"? I mean, the correct term is (as far as my knowledge goes) a Natural Satellite. Moon would be the name we gave Earth's Natural Satellite, just like Phobos and Deimos are the names we gave Mars' Natural Satellites. I'm asking because I want to know if its okay to, scientifically speaking, call Phobos a "Moon" when "Moon" is not a term, its a name.
Earth's moon is also named Luna, and moon is usually a generic term not a name, hence it being correctly lowercase in English.
Earth itself is aka Terra.
Our sun is aka Sol, which going back to your original point, means any other "solar system" we might discover should probably be classified differently. But then again, according to my first point, "solar" being lowercase does make it functionally generic... shrug.
A moon is a natural satellite, the moon of earth is named The Moon
So what would be an unnatural satellite?
Actually, moon with a lower case would apply to any minor body orbiting a larger body (hence Earth is a moon of the Sun).
It's only confused ignorant humans that use the description of Earth's moon as Moon (and various cultures have different names for this moon anyway)
@@bobjoatmon1993 the earth isn't a moon of the sun, it's a planet. An unnatural satellite would be something like a geostationary TV satellite, GPS, sputnik
@@clarabisson7299 well it depends o which dictionary or how much common sense you have as to whether you can say any minor object orbiting a major object is a moon of the major object. Only quibblers don't get that point.
3:40 Has nobody noticed taht Phobos and Deimos look like puzzle pieces that belong together?
Moons are serious underrated celestial bodies
Hank Green, you are just the most adorable "widdle" nerd, with your Phobos, flanked by a "widdle Mars", merry month of May calendar page...The context is cuteness!😘
Calendar ordered😎
How many times do I have to clone myself to possibly witness the murder of Phobos?
Reincarnation will do it, according to your karma. Pundits say a million years of incarnations as a human is minimum.
Humans in 30 - 50 million years LOL.
Moons should be gravitationally rounded
round up or round down?
Don't judge them, they don't have to look like the moons in the magazines, they're beautiful just the way they are
Most of the moons in the solar system are too small for that to happen.
Isn't it obvious? Phobos has all of the canals that were supposed to be on Mars. 👽
Well you just sold me on the calender. My birth month with my favorite planet and one of its moons
Would Phobos tearing apart form a hail of meteorite-like impacts on the surface of Mars that would dissipate fairly quickly on an astronomical or geological scale, or would it form a ring, like the ones around Jupiter and Saturn? Is Mars big enough to form rings, or is that more of a gas giant feature?
I'm guessing it would form a ring, and if the ring continues to approach the planet, there will be a lot of violence on the martian surface. Last I heard, even Saturn's rings are temporary on astronomical time scales, and they'll be eaten eventually.
Yes, a ring was what I thought of, too. Though without Saturn-style shepherd moons to keep it stable, it would dissipate after some, I dunno, thousands of years.
@Science Revolution tell me you struggle with math without telling me you struggle with math.
@@demonzabrak I think it's a bot, the same account left the same comment elsewhere on this video.
a third calendar. Just all the calenars. And this one shows yet another facet of Hank promoting exciting thing
Thanks for yet another interesting video, well and lucidly presented. My mind wandered bit thinking about the names of those moons. It brought up from memory recollection of a scific short story read long ago--too long to recall title or author. Human explorer on Mars found cactus like vegetation growing in some locations. That was surprising enough. But they were baffled by the way that so many plants were chopped off at around 8 feet from the ground, while others not in direct lines with them had gouges on one side or its opposite at the same height. As they pondered this, a small object traveling fast swept past--just at the right level. After observing this rapid transit a few times, the scientists conjectured that they were seeing a highly unlikely MOON orbiting unbelievably close to the Martian surface. Claiming right of naming for this discovery, keeping in the spirit of the previously known satellites, they named it Bottomos.
googling for ""Bottomos" mars moon" led me to a scifi.stackexchange link with a similar story which answer links to the book "The Holes Around Mars" by Jerome Bixby
@@Rodrigo-xf2oe Thanks for that lead. My memory of what I read is a bit murky. I think I read it in an anthology sometime in the early Sixties. I am pretty sure that the story was about plants, not rocks--but I might be mistaken. Or, it may be a case of
two writers using the same basic plot. I'll try to find the Bixby story and read it.
You nailed it. Using your clue, I found an audio version of the story on UA-cam. My memory--amazing after so long--I must have been 14 when I saw the story in an anthology--was mostly correct, though there are more rocks than cacti involved. Hearing it was enjoyable. I recommend it. What amazes and annoys me is how I could recall details from that long -ago reading but now.....I read China Mieville's novel Perdido Street Station 5 years ago and decided to read it again. Halfway through, I have to take it as an entirely new experience since not a single scene, situation or character is what I thought I ought to recognize. Oh, what a huge difference being 75 instead of 14 makes!
@@greggi47 I have had the same experience as you when it comes to remembering things that I read as a teenager compared to things I have read fairly recently. I think it’s got to do with the stronger impression that something that is novel makes on our brains as compared to things that seem less novel. When you’re a teenager, every idea is novel. When you’re in your 70s, as we are, not so much.
@@fleetskipper1810 That's a reasonable explanation. It also has the benefit of letting me see the experience as a positive one, not a signal of dotage.
A moon calendar sounds like the perfect gag gift for the werewolf in your life.
Somehow, I doubt that, even if humanity LASTS 30-50 million years, a small meteor shower will not be an issue for the people living there... Just a thought.
well, I'm pretty sure Phobos is the same size as the asteroid that ended the dinosaurs, but if humanity survive itself for another few million years, it can survive a meteorite
@Tech Priestess Micaela isn't there already discussion of doing this as part of Mars initial colonization? Since Phobos could be used as a orbital staging base?
The stuff that falls down isn't the problem. It's the millions of little pieces that stay up there for awhile, scattered all over at orbital velocity that will make any travel to/from the planet's surface an issue.
My favorite and horrifying theory is that it was scratched by some absolutely massive entity with it's claws
Any Leather Goddesses of Phobos fans out there? Wonder what that game would be like now?
Thank you so much for stating “anywhere in the world” in respect to your calendar.
(Thank you for this video! ) It's seems to me that pieces of the object which impacted Phobos and caused the crater, caused the 'scrape marks', NOT from rocks bouncing out of the crater but from high speed rocks flying past and scraping the surface of the moon. (My assumption is that the space object was not a singular solid rock, but more like the asteroid from the movie Armageddon. ) The crater doesn't seem to be symmetrical, and that suggests that there would be more rocks flying past Phobos one one side than the other. If Phobos were rotating towards the object, that also would bias scrape marks to one side of the moon. I'd also hazard a guess that the inibial, big impact changed the rotation of Phobos significantly and the perpendicular scrape marks were from the 'tail' of the object that hit it. (My assumption is that Mars' gravity started breaking up the object before it hit Phobos.)
Thanks for the warning, I will keep it in mind to be ready for it.
You had me at moons.
I was sure it was going to be sandworms 😑
That theory makes more sense than anything else at this point.
Now I’m itching to know about the vicissitudes of the line between orbiting bodies merely colliding (crumbling, tumbling, scraping, scratching, smashing, grazing,..) and colliding with chemistry (you’ll have to forgive my ignorance of terminology; here I mean impacts that result in explosions, ignition of material, and other strongly thermal-slash-chemical reactions). What draws the line between KA-WHAM and KA-BOOM?
Oxygen?
What if we merge Phobos into Deimos? Make one slightly larger moon for Mars and then put it into a more stable orbit?
Probably many decades away technology but what if?
should we? :)
2:50 lol I’m imagining someone narrowly avoiding a flying boulder, wiping their brow and the same boulder reappearing over the horizon at a slightly different angle and flying at them again
how about deliberately crashing Phobos into Mars?
It could release a lot of Carbon Dioxide, which would be beneficial for terraforming.
Any gases, including water vapour, would be quickly lost to space. Mars does not have sufficient mass to maintain an atmosphere.
@@freemind.. Yeah, but that would happen over time, during which we can replenish the gasses. Mars does have some mass, therefore gravity, so it would keep the gasses bound to it. What it lacks is a magnetic field, and the solar wind ionizes the atmosphere stripping it away. Granted, you would need a lot of gasses to have 1 atmosphere of pressure, but a lot of carbon dioxide is trapped in soil and dry ice, every bit of it helps.
@@Daniel_cheems- CO2 is such a tiny portion of atmospheric gases. Water vapour is by far the most crucial... you are correct either way in saying that every little bit helps. It is doubtful that a chunk of porous rock in space would contain much co2 at all.
@@Daniel_cheems- What we were all taught about planetary magnetic fields is completely incorrect. The reason Mars has no magnetic field is that its moons are too small to generate any tidal pull, and there are no other celestial bodies of significant size to to provide tidal influence. The field is not created at the core. It is produced in the crust and is technically a piezoelectric field produced by the mechanical stress on crystalline crustal material (usually quartz-based). Mars doesn't receive tidal influence.. thus, no magnetic field. Venus is in the same boat.. no moons.. no field. Mercury has no moon, but is close enough to experience influence from the Sun.. thus, Mercury has a magnetic field (though about 1% the strength of ours).
I don’t suppose you’ll understand where I started singing to myself “I’m a lumberjack and I’m okay…”.
there's some evidence that the martian moons have formed and unformed several times.
By "unformed," do you mean broken up into rings (and then, presumably, reaccreted later)?
@@Globovoyeur yep! they presumably get progressively smaller with each iteration but it should happen a few more times if that's what's happening. when we get there we can see if phobos and deimos are made of the same material and how old the rock is.
Can you guys make a version of the calendar for Europe where the week starts with Monday?
@@321CatboxWA You know, American calendar is like: Sunday, Monday, Tuesday ... Saturday
But Europen calendars start with Monday and end on Sunday
@ Yeah I'm not sure why our calendars do that. Most Americans would say "the week" starts on Monday, the start of a work/school week. With respect to religion, the day of rest is mostly "observed" on Sunday in the US though some regions are very Saturday-oriented (Adventists).
Funnily, in 321 Emperor Constantine decreed the Sabbath to be "on the day of the Sun," so this argument has been going on for a longg time.
I've always wondered if the great canyons of Mars were created when a moon struck the planet, sending the moon off as two pieces, becoming Phobos and Deimos.
Valles Marineris was created by stretching of the crust by the huge volcanic Tharsis region to it's North West. Three of the largest volcanoes in the Solar system run parallel, incluing the biggest of all, Olympus Mons. The lack of plate tectonics on Mars means once in place it couldn't move, just get bigger and bigger.
@@bazpearce9993 the contours of the enormous crevice look nothing like the processes that you describe, more like an unimaginably powerful electrical discharge.
@@billmarsh1971 More electric universe bollox? Total bunk. Also, i must ask. Where did you study Geology then?
I used to think Phobos and Deimos were captured asteroid too but their orbits are too close to the plane of Mars' equator for them to both just happen to line up that way if they were captured asteroids. Moons that orbit along the plane of a planet's equator are typically moons that formed along with the planet or were formed from parts of the planet being spun off into space by an impact or some other forces.
@@stuartaaron613 True but don't Deimos and Phobos orbit in basically the same plane (as in if you were to trace their orbits around Mars and look at their orbits side on the two orbital paths would almost line up)?
When we look at the captured asteroid moons of Jupiter we see moons with wild and chaotic orbits that are notably different from the major moons which likely formed along with Jupiter.
@@CStone-xn4oy I've deleted my replies because I realized that I was incorrect about the orbit of Deimos. It does orbit in the same direction as Phobos. Therefore it is possible that the two moons are natural satellites of Mars.
I said immediately that the lines were caused by Phobos being so far inside of the Mars' gravity well and that these lines are actually "stretch marks" caused by the resulting tidal forces.
I'm skeptical of "bouncing boulders" causing lines. We don't' have lines on hillsides where rocks and boulders fall down hills right?
... yeeeesss.... rocks falling down hills definitely leave behind tracks. Weather and plants tends to erase them eventually but they're definitely there after it happens...
Yeah, big rolling rocks do absolutely leave tracks.
ua-cam.com/video/-5SiQqSroIw/v-deo.html (1 min)
That's a rock roll, not a Rick roll.
It's odd to me to even think phobos would have enough gravitation to hold rocks to roll across the moon leaving behind massive depressions.
None of those hypotheses are correct. Mars most certainly does not impart enough tidal forces on Phobos to "tear it apart." It is not happening and will never happen. It will be torn apart by Mars' atmosphere before its tidal forces.
Citation please.
@@AndrewTBP You are hereby officially cited for running that STOP sign. License, registration & proof of insurance, please.
1:56 Asaph Hall named a giant crater after his wife?! That made me laugh.
"In 30 to 50 million years, the stress will be great enough to tear the moon apart."
Whew, dodged a bullet.
That's one groovy mystery right there, Scooby Doo!
Hi Hank!
I'm suddenly curious -- what if Mars had three moons instead of two? It's not like mythological Mars has any triplet children so what would Mr. Hall have named them instead?
Phobos, Demos, and Sid.
Perhaps they would have different names.
If we have enough people living on Mars to make the destruction of Phobos a problem, we probably have the means to move Phobos (unless it really is just a pile of rubble, in which case we should try to crash it 𝘣𝘦𝘧𝘰𝘳𝘦 colonizing Mars.
What size, weight and speed would and object have to be to knock Phobos off it's current trajectory?
Hank? You're a Taurus? So is my Schnauzer Fritz! Awesome calendar!
4:29 don't worry I have a calendar I put a reminder so we don't forget
It's plasma discharge, electric cosmology.
Aren't there some scientists that think Phobos is either the core of a destroyed planet or the core of a planet that never formed? I thought Phobos was theorized to be a (relatively) solid chunk of metallic composition?
EDIT: Nvm. I was thinking of 16 Psyche.
If there are any people on Mars in 30-50 million years. I dont think Phobos raining down on them will be a problem, because in 10 million years, Mars inhabitants will have likely mined it for a Martian space station and will have put the station an Phobos into a less risky orbit.
"People" in 30 million years? 3 million years ago "we" were australopithecus. In 30 million years we'll be either extinct or changed into something that does not resemble "people" at all.
@@nunofoo8620 Yeah, I used people loosly refering to descendants of today's modern humans. But what really defines a people or persons doesn't require a great stretch to apply to human descendants.
Phobos just finished Thanksgiving Dinner and needs to unbuckle its equator.
def buying calendar!
I'd be really shocked if humanity survived even to 2100 AD.
*sobbing bc in tens of millions of years it's possible that a asteroid moon that I never knew about might get murdered*
First thing I said when I saw the thumbnail for this video was "Stickney".
Every time a moon gets grooves gets carved into it, it's Phobot House. Every time a corpse is desecrated on school property, it's Phobot House. PHOBOOOOOTTTT HOUUUUUUUUUSE!
Dangit ! 50-60 Million years ?
I think i may miss that one.
We can not figure out our own planet. Let alone places we have never been . BUT really interesting. Thank you science people
I am just learning about Mars' moons and I have questions. Do Mars' moons have phases? If there was water on mars, how would two moons affect the tides. And lastly (but leastly) how would two moons affect a werewolf's transformation cycle?
I'm going to blame the Leather Goddesses of Phobos.
How come on earths moon all the impact craters appear to be of a uniform depth, despite the width/size of the impact?
I suppose the ACTUAL theoretical guessing will begin when we enter Phobos and Deimos and discover their enormous Captains' chairs and bridges. 😎
It's called "sputtering" and is an artifact of electrical discharge machining. When the discharge plate moves beneath the electrical arc, that is what you get. It's also whey there are "crater chains" on so many planets, moons, and asteroids in our solar system. They are evidence of electrical arc discharges.
It’s so weird when he showed the complete photo of the moon the first thing I thought was that the lines looked like stretch marks lol
Cool. Thanks for sharing.
Moons, & Microbes, & More! Oh My!
Truly, the only thing that makes me sad about my own death and subsequent non-existence is that I’ll never get to see the far, far, far future of humankind and the ways we’ll hopefully become an interplanetary and interstellar species over the next 50 million years. I’d really love to know what the distant future holds. Other than that, I’m perfectly happy to cease existing when my time comes.
I wish I could feel confident that something that our species has contributed to knowledge and civilization's good developments will survive that long. That would make me feel good, that I'm part of something that will continue to grow and develop and improve. I don't have to see it, either. I just wish I could feel more confident that it's a good future for Earth life, rather than a self-destructive one.
My only suggestion for the calendar is to make a desktop version. I can't hang the calendar at home or at work. Desktop calendar works best. Thanks.
Most likely Phobos and Deimos were formed by a ring of material ejected from Mars itself in the deep past (from the giant impact that formed Hellas crater or the Northern depression). This would explain how they got into to orbit as well as why they are both loose piles of rubble. Both of them likely coalesced near the geostationary orbit of Mars, with Phobos just inside it and Deimos just outside it. In the ~ 2-3billions years since tidal forces have worked them in opposite directions, with Phobos slowly approaching Mars, while Deimos getting further away (in the same way Earth' Moon is getting further away). It is even possible there were other similar moons or Mars which were inside Phobos but have already been pulled apart and collided with Mars
Wanna see mars rip Phobos apart, but instead of sending it to the surface, make a ring, so mars would have a ring.
Suggested plan for future humans: Deorbit Phoebus and Demos into the polar ice caps of Mars. See if that water can be unlocked.
It was the impact of the meteor that hit it. If you look at all the pictures we have the moon, it is clear that every track we see is is a straight line without tread marks. All of which originate from the impact crater. That is my best guess from looking at the photos.
This was groovy!
Leaving a comment cause it’s one of the few ways I can support.❤
I still think there's a way to blame Jupiter.
The Valles Marineris looks very suspicious to me.
Like something sort of hit Mars at an extremely low angle then bounced off.
Yes! Or disintegrated entirely.
If people are living on Mars in 30-50 million years and haven't utilized both Phobos and Deimos, I don't know what they're thinking. They're an enormous treasure trove of orbital material.
A new Moon every Month?! Excellent!
😉