About cave art. Our ancient ancestors didn't only paint in caves. There are also ancient paintings found on cliff faces above ground. The reason such paintings are more common in caves, is probably because any art that was painted above ground would be more exposed to erosion from weather.
@@paulohagan3309 Which is also uncommon tho. For example the oldest cavepainting we found is about 45k years old. In that timeframe some desters became jungles and turned back into deserts. For example evidence suggests that the Sahara was green from 9000 to 6000 years ago.
@@saltboi6374agreed, the stuff in caves just last the longest. They probably made all sorts of paintings on wood and banana leaves and animal hides ect
"Hey Zork, we should send a manned mission to the 3rd planet to check for life!" "Mkkth, are you joking?! 80% of that planet is covered in molten ice! No way life is possible there!" "Yeah, I guess you're right, Zork."
Reminds meof a vague memory I have of a science fiction story about if I recall correctly a machine intelligence encountering life on Earth. 'Meat? What?' Yes I'm telling you they're made of meat. Meat? You've got to be kidding me.'
Hi John, I just want to say thank you for using your own time to produce amazing content for all of us to see! I have recently started a new career in Industrial Radiography using radioactive sources as I love science, the cosmos and how things work in general and your enthusiasm in what you do fuels up my enthusiasm even more! The Martian dust scenario is one of the most interesting things I’ve heard about so far and quite eerie at the same time!
@@LegendaryBrofister Don't feed the trolls please. Or they'll spend too much time on the internet instead of getting on with their homework like their mother told them to.
I wander through many various kinds of science/space videos... ...I must say, I really enjoy everytime I find new ones you made That sense of wonder that seems infused in each ☺️
That bit about the Mars dust is super cool. I’m curious…between how much lower the Martian gravity is for dust and debris to escape from, the comparative lack of a thick atmosphere to slow down ejecta via drag, and the ridiculous size of Olympus Mons, I wonder if in the past that supervolcano to put Earth’s to shame just straight up blasted volcanic ash (as in fine dust…) forcefully enough that a lot of it never came back down. Perhaps periodically over eons. We know that this has possibly happened even with terrestrial volcanoes that have way more gravity and air resistance to stop things from leaving….
I got chills listening to your first example. Last night "The Why Files" covered the theory that Mars used to be inhabited but was destroyed by nuclear war. Nukes powerful enough to strip a planet of it's atmosphere would throw a lot of dust into space...
I guess we’re all on the same viewing schedule 🤣. I just watched the why files too and I was like ‘no shit there’s dust from mars it got blown off the planet when the aliens nuked it’
I just saw it this morning and I didn't even know the Mars pictures were altered to show that fake orange tint... or even that NASA has an "art" team dedicated to altering pictures at all. I try to keep myself open minded but skeptical.
@@kenbeek6264 I think that many generation X-ers and millenials (like me) tend to watch videos with a duration around 10 to 20 minutes without getting distracted. Nevertheless, very important episode as you said.
Had no clue that "Zodiacal Light" was a phenomenon until you explained it. Did a double take, as I just finished Alastair Reynolds's Inhibitor trilogy, in which that is the name of one of the prominent ships.
I think he was in some obscure British band like Fairport Convention or the Sex Pistols. Played bass or something. Certainly wasn't on level with Queen. Jimmy Page certainly was good. Competent paper though, written very tidy and proper. :)
He also suggested that "Fat bottomed girls make the rocking world go 'round" 50 years ago. Since then, no other scientist has refuted this theory, therefore we have to accept it as a scientific consensus.
Thank you man,thank you for all the content in this channel this is a futurist and space entusiast paradise im almost every night before sleeping watching your videos this channel is awesome
I wouldn't so much say sad, more interesting. Because that just goes to show how adaptable life is, and likely will become as we spread our influence more and more into traditionally natural environments. We already see this with the plastics in the oceans and pigeons in cities
"Why paint on cave walls?" - 17:38 I think there's a much simpler answer: early humans might have painted everywhere, but only the paintings on cave walls survived, protected from the elements as they are.
A really interesting thing with the lacewings. Theres this giant almost cicada/locust looking bug that went extinct in my area decades ago, the only kicker is that I've seen two of them within the last 20 years end up under a table in my shed. These weird giant bugs that hop around in the night time but hide in the day not moving. I'd assume it's due to being near a cool sheltered stream that they likely frequent
If it's at all related to the cicada then maybe instead of going extinct it just has an approximate 10-20 year live burial stage. Cicada's do that too. Bugs are weirdly interesting, some of their behavior seem to have a higher purpose, almost ritualistic.
I read the article written by the guy who found the Giant Lacewing. He found it clinging to the side of one of the Walmart semi trucks....that is part of why they aren't certain of its current range. They don't know how long it had been riding along.
You nailed it again, John! Another video which I really like. Pleasant thought-provoking without much existential crisis 🤣 Although I can't say the same for you.
12:55 Australian Aboriginal Rock art dates back 60,000 years, possibly up to 80,000 at the time of migration through Asia during a mini ice age when land bridges may have been present.
We've also discovered some impossibly old/ early galaxies. Big bang needs rework At least one gigantic galaxy which should have needed far longer to evolve. And one so tiny it's strange that it formed at all.
Number 2 is really interesting to think about. This might be the first real evidence of microbial life on another world but it could also be something completely different.
Great video, I'm still mind blown in how amazing mars as a planet is, of course all planets are, but we are so close in solving many mysteries there, and maybe the next step will be Venus or Europa
I think it has something to do with Olympus Mons and the gigantic high speed twisters that occur. Its been lifting material of the planet and is a likely source for the loss of water as well. Dust and frost just slung all about the inner solar system.
Black holes and dark energy . Dark energy and white holes. The dark energy we observe could be from white holes from another part of the universe. I wonder if there is any research on that?
As for MOND, there's also another assumption, which doesn't includes the MOND, but assumes that our universe could be anisotropic. Check paper Metric dynamics by S.V. Siparov for more info. (it's probably has some connections with metric dynamical system studies in general)
Another great video as always, I believe it has been shown that ancient hominids responsible for the ancient cave art, took naturally occurring hallucinogens and thus produced the odd creatures and figures seen in the artwork, basically they were tripping!! Of course Ancient Alien believers would say they're depicting aliens.
I've seen an article about the dwarf planet with rings and thought at the time that rings around a planet that shouldn't be there suggest that the ring(s) is temporary and will eventually become a moon or moons. It may have not collapsed yet, but is there any indication as to when the material got there? A collision of objects could have happened not that long ago, but still far back enough nobody on Earth would have seen it considering we're talking about an object that was only relatively recently discovered (2002). I mean, we have what we think is a decent understanding of how rings and moons form and behave, but we've not exactly seen it happen since they aren't every day events in our star system and likely change on long time scales (with respect to human lifetimes). It could be that the Roche Limit is pretty accurate, but the outer ring around Quaoar is very new and is in the process of either slowly escaping outwards or accreting into a small moon. It could also be that the bits that make up the outer ring are moving too fast to "stick" when colliding and it will take a while until a more uniform velocity causes more accretion. I do remember reading there is evidence of some moonlets (or basically bigger rocks) within the ring causing some gravitational effects within the ring, so it might just be a transitional phase we got to see, which is pretty lucky.
Well, thank goodness discoveries _do_ come at breakneck speed. That way, we might just achieve something as a species before we finally hit the "off" button and make ourselves extinct. I'm sure that's coming sooner than we think.
The most unusual scientific discovery of the last several years was that of a possum which broke into a pastry shop. They eat... They feast... They - evolve... Just as we must. Ain't that disturbing...?
Seagulls are a common part of my childhood and adult life. I was born in Biloxi, right on the Gulf of Mexico. Then I moved to New Orleans when I was 8, right by Lake Pontchartrain. So I’ve always lived close to the water, so seagulls are a familiar sight. The ones on the Lake are brave. They will swipe food from a picnic table inches away from someone eating. My fries were robbed by a seagull who basically dive bombed the table with his friends. They aren’t scared of people, but they don’t like dogs…lol
Long time listener here JMG, love your videos. So its with the utmost respect i give a tiny criticism; 8:30 when talking about the "singularity versus dark energy in a black hole" i find this misleading and simaplified. Frankly both terms represent almost total unknowns. They dont known what if anything resides at the center of a black hole, whether its a separate force or anything. Unless there are recent discoveries around dark energy i havent heard yet.
Giants stars which live fast and die young like Betelgeuse may not have planets because of the short life span (10 to 20 million years). But in general I think that most stars do have planets.
Just imagined a scenario where huge chunks of atmosphere freeze so quickly they are flung centrifugally rather than falling, yet only nearly reach escape velocity, “falling” back as gas.
A fascinating broadcast as usual, Sir. The giant lacewing thing, though, comes across as fairly duff science. A single lacewing rocking up somewhere doesn't exactly explain a trend amongst lacewings as a whole. It could have been a hitchhiker (most likely, especially given its location) or simply blown off course. Sometimes, a Monarch butterfly will fetch up on European shores, far from its usual migration route across continental America. No-one is suggesting that this indicates a trend. I'm pleased to see more weight of evidence for Martian life. The same evidence, in fact, that was found on Mars by the Viking lander in 1976. But it was decided, on reflection, that that compelling evidence was not compelling enough and that somehow the robotic analysis had been fluffed. It does a disservice to the team involved with this project, and also wasted an insane sum of money, for this viewpoint to have been maintained for so long.
As to the lacewing, as I said it merely has reappeared in an area it was formerly indigenous. Yes, it could have hitched a ride from the western US on some produce, but is that more likely than insect specialists that are far from omnipresent falling for selection bias and prematurely declaring the lacewing's former range defunct? I'm skeptical. As to the Mars life, I knew one of the principal researchers. The late Dr. Patricia Anne Straat. And she maintained, as did Gil Levin who designed the experiment, that the Viking detection was valid. I did an Event Horizon interview with Dr. Straat before her passing that's up on UA-cam. The problem is that it really wasn't compelling enough. How does the upper crust of the Martian soil provide both water and protection from UV enough to sustain robust enough microbial life to be detectable by a 1970's chemical sniffer? Granted there are biases there, but in the face of perchlorate and abiotic chemistry that might have happened, I'm not sure it's very compelling at this stage, though I'm fully open. Could be wrong, but that's better than jumping to conclusions. A repeat of the experiment, perhaps better designed and more specifically tailored to detecting chirality might be warranted but NASA is still a bit gun shy on direct life detection experiments because of the past.
I've always thought that Zodiacal Light was an awesome name for a Lighthugger starship....if I ever get a yacht, thats what im gonna name it. (its the name given, by a hyperpig character in Alistair Reynolds' novel 'Redemption Ark', to a pirated/siezed giant starship designed to accelerate continuously until its kissing lighspeed....hence the name 'lighthuggers')....except i think ill pronounce it Zoe-diya-cal....rolls of the tounge a bit better.
Black holes can be both. They have a singularity that eats matter and dispenses it in another dimension. That matter now interacts with our universe from the other side.
The cave painting one might be as simple as survivorship bias. There are rock paintings on rocky outcrops at least in Finland, and presumably elsewhere too, but when it comes to prehistoric art, the pieces in caves are globally much better-known, because those seem to be more common nowadays. I'm just hypothesizing here, but it seems pretty likely that humans would paint on any surface they can find and the ones on cave walls are just more likely to survive.
I love the idea that, in the not-so-distant future, there could be specific nature preserves that are entirely manmade structures. We need to get congress to declare that Wal-Mart in Arkansas a protected habitat for the Giant Lacewing 🤣
Am I the only one who vociferously objects to the IAU's naming convention for exoplanets? The planets are named in the same category as a system's stellar components? The star is A, the first planet outward is B, etc? How ridiculously provincial. We stopped calling Sol a "planet" centuries ago. It's a different thing. I prefer the more descriptive convention used by, yes, science fiction where the stars are listed alphabetically and the planets numerically. Follow me! We must rebel against our IAU overlords!!
Has anyone tried one of those big computer simulations with MOND instead of Dark Matter? I'm particularly interested in models of the Big Bang, since current models are pretty detailed, and I've never heard how MOND would affect those (that they would necessarily change considerably is the obvious part, but has any work been done on the details?).
Absolutely, but some galaxies seem to have no dark matter, and sometimes that seems to be because they've collided with another galaxy that now has *more* dark matter than we expect. That is the reason MOND isn't more mainstream as an explanation for dark matter, though they can simulate it.
![Collisions of the Early Solar System [4K]](http://i.ytimg.com/vi/5cw0dO5RF-8/mqdefault.jpg)
About cave art. Our ancient ancestors didn't only paint in caves. There are also ancient paintings found on cliff faces above ground. The reason such paintings are more common in caves, is probably because any art that was painted above ground would be more exposed to erosion from weather.
I seem to remember something about rock art by the original inhabitantsof Australia.The Outback dry desrt conserved them?
right, this is an excellent example of archaeological survivor bias
Newspaper rock. Been there.
@@paulohagan3309 Which is also uncommon tho.
For example the oldest cavepainting we found is about 45k years old.
In that timeframe some desters became jungles and turned back into deserts.
For example evidence suggests that the Sahara was green from 9000 to 6000 years ago.
@@saltboi6374agreed, the stuff in caves just last the longest. They probably made all sorts of paintings on wood and banana leaves and animal hides ect
"Hey Zork, we should send a manned mission to the 3rd planet to check for life!"
"Mkkth, are you joking?! 80% of that planet is covered in molten ice! No way life is possible there!"
"Yeah, I guess you're right, Zork."
Reminds meof a vague memory I have of a science fiction story about if I recall correctly a machine intelligence encountering life on Earth.
'Meat? What?'
Yes I'm telling you they're made of meat.
Meat? You've got to be kidding me.'
@@paulohagan3309 Search for "They're Made Out of Meat" and your memory will no longer be vague. :)
Hi John, I just want to say thank you for using your own time to produce amazing content for all of us to see! I have recently started a new career in Industrial Radiography using radioactive sources as I love science, the cosmos and how things work in general and your enthusiasm in what you do fuels up my enthusiasm even more! The Martian dust scenario is one of the most interesting things I’ve heard about so far and quite eerie at the same time!
HE DOES IT FOR MONEY DONT THANK HIM
@@fluxstandard8364 ok guy
@@fluxstandard8364 you wouldn’t thank a surgeon if they saved your life? After all they do it for money
@@LegendaryBrofister Don't feed the trolls please. Or they'll spend too much time on the internet instead of getting on with their homework like their mother told them to.
@@fluxstandard8364"How dare you make money doing your job"
I wander through many various kinds of science/space videos...
...I must say, I really enjoy everytime I find new ones you made
That sense of wonder that seems infused in each ☺️
Very interesting, John. Ten interesting shorts in one upload. You out do yourself week after week. Great way to end my week!
Happy Friday everyone!! Thanks for the video!!
🙂
That bit about the Mars dust is super cool. I’m curious…between how much lower the Martian gravity is for dust and debris to escape from, the comparative lack of a thick atmosphere to slow down ejecta via drag, and the ridiculous size of Olympus Mons, I wonder if in the past that supervolcano to put Earth’s to shame just straight up blasted volcanic ash (as in fine dust…) forcefully enough that a lot of it never came back down. Perhaps periodically over eons. We know that this has possibly happened even with terrestrial volcanoes that have way more gravity and air resistance to stop things from leaving….
Very good point
The obvious past destruction of the 5th planet [forming today's asteroid belt] is the most-logical source of said dust.
I got chills listening to your first example. Last night "The Why Files" covered the theory that Mars used to be inhabited but was destroyed by nuclear war. Nukes powerful enough to strip a planet of it's atmosphere would throw a lot of dust into space...
I watched that right before this video and had the same exact thought.
Crab 🦀 cat
I love Hecklefish
I guess we’re all on the same viewing schedule 🤣. I just watched the why files too and I was like ‘no shit there’s dust from mars it got blown off the planet when the aliens nuked it’
I just saw it this morning and I didn't even know the Mars pictures were altered to show that fake orange tint... or even that NASA has an "art" team dedicated to altering pictures at all. I try to keep myself open minded but skeptical.
Very important episode, John, I'm sure you got a lot of minds thinking about these things, well done.
Too short, though... can we get a Top 20? 😂
@@kenbeek6264 I think that many generation X-ers and millenials (like me) tend to watch videos with a duration around 10 to 20 minutes without getting distracted. Nevertheless, very important episode as you said.
Always a good day when JMG uploads a new video, a good day indeed!
Had no clue that "Zodiacal Light" was a phenomenon until you explained it. Did a double take, as I just finished Alastair Reynolds's Inhibitor trilogy, in which that is the name of one of the prominent ships.
I love your Top 10 videos! I was worried for a second, you'd abandon them. The only top 10 lists on the Internet that's not clickbait. Thank you!
There will be plenty more. They just take longer to write and record due to length, so have a slower release schedule than regular videos.
I love your channel man. Thankyou for everything you do
My favorite video so far. The cave art has always fascinated me. ❤️
I love getting a notification from this channel I have this queued up for when I go to sleep later. Thanks JMG
Some scientist called Dr Brian May wrote his PhD on zodiacal light. I think he was in a band too.
D:Ream, oh wait, that's Dr Brian Cox!
A rock star, stargazer…
Uhhh, Duchess, right?
I think he was in some obscure British band like Fairport Convention or the Sex Pistols. Played bass or something. Certainly wasn't on level with Queen. Jimmy Page certainly was good. Competent paper though, written very tidy and proper. :)
He also suggested that "Fat bottomed girls make the rocking world go 'round" 50 years ago. Since then, no other scientist has refuted this theory, therefore we have to accept it as a scientific consensus.
Thank you man,thank you for all the content in this channel this is a futurist and space entusiast paradise im almost every night before sleeping watching your videos this channel is awesome
Walmart as a habitat. That's both saddening and... expected. All manner of creatures live in there...
I wouldn't so much say sad, more interesting. Because that just goes to show how adaptable life is, and likely will become as we spread our influence more and more into traditionally natural environments. We already see this with the plastics in the oceans and pigeons in cities
And all sorts of creatures go there to shop!😊
Fantastic stuff, John! Thanks a bunch for the video! 😃
Stay safe there with your family! 🖖😊
"Why paint on cave walls?" - 17:38
I think there's a much simpler answer: early humans might have painted everywhere, but only the paintings on cave walls survived, protected from the elements as they are.
Thank you for this truly fascinating segment
I just woke up, and first thing I see is that John Michael Godier posted! Oh boy! Perfect timing
Another phenomenal episode thank you 😊
i dont know why but i find prehistoric art to be the most beautiful art ive ever seen and it brings tears to my eyes
JMG's cadence is half the reason why I watch these 😂👍👍
JMG videos are so good. I he never stops making them.
A really interesting thing with the lacewings. Theres this giant almost cicada/locust looking bug that went extinct in my area decades ago, the only kicker is that I've seen two of them within the last 20 years end up under a table in my shed. These weird giant bugs that hop around in the night time but hide in the day not moving. I'd assume it's due to being near a cool sheltered stream that they likely frequent
If it's at all related to the cicada then maybe instead of going extinct it just has an approximate 10-20 year live burial stage. Cicada's do that too.
Bugs are weirdly interesting, some of their behavior seem to have a higher purpose, almost ritualistic.
Cool!
Every JMG video is unique but this one especially is really important and cries out for sharing and for millions of views.
I read the article written by the guy who found the Giant Lacewing. He found it clinging to the side of one of the Walmart semi trucks....that is part of why they aren't certain of its current range. They don't know how long it had been riding along.
Very recently happy to see this! Thank you 😊
Very cool! I liked #5 about the ringed dwarf planet- just a little mysterious 🤔
I love this channel
Great summary, thank you.
Unusual Fact 11:
_Did you hear about Pluto? That's messed up_
Great video topic! A bit different but in the same realm of things. 👍
No matter how many times I hear you say live I bust out laughing, great videos, great job.
You nailed it again, John! Another video which I really like. Pleasant thought-provoking without much existential crisis 🤣 Although I can't say the same for you.
👍Thx JG! Tight summary.
12:55 Australian Aboriginal Rock art dates back 60,000 years, possibly up to 80,000 at the time of migration through Asia during a mini ice age when land bridges may have been present.
That first phenomenon referenced is so cool to see
the dust particals in space is obviously from olympus mons i dont know how people dont instantly tie that together
We've also discovered some impossibly old/ early galaxies. Big bang needs rework
At least one gigantic galaxy which should have needed far longer to evolve. And one so tiny it's strange that it formed at all.
Number 2 is really interesting to think about. This might be the first real evidence of microbial life on another world but it could also be something completely different.
Ten is a very usual number for such an unusual list!
Scientific discoveries - new things in science - are by definition unusual
Great video, I'm still mind blown in how amazing mars as a planet is, of course all planets are, but we are so close in solving many mysteries there, and maybe the next step will be Venus or Europa
Daily dose of existencial crysis
Best vids on UA-cam.
Cave art shows incredible skill. There's no way those were done by beginners.
Yes. Superb craft
They are much better than Picasso was on his best day. True artistry in many cases.
😐
Great great great episode. 17minutes had flown by Quick!
I think it has something to do with Olympus Mons and the gigantic high speed twisters that occur. Its been lifting material of the planet and is a likely source for the loss of water as well. Dust and frost just slung all about the inner solar system.
as the universe expands, so too does our understanding of it
Interesting thought
Literally best channel on UA-cam ❤
Thank you for creating a playground for the mind.
Prehistoric cave paintings 65' above the floor!? I'm gonna have to look more into this.
right because there's NO EXPLANATION FOR HOW IT COULD BE DONE
....other than, you know, making a ladder or a rope
A perfect way to cap off my work week.
7:52 Who claims that cosmological constant has anything to do with vacuum energy? AFAIK these are totally independent artifacts of different theories.
Waiting for Tay Zonday’s comment.
Too early still, gotta wade through all the pussy to get to the internet
I was feeling depressed when I saw your comment and made me laugh 😂 soo hard 😢 thank you 😊
What do you mean? Did Tay Zonday comment on another video of his?
Black holes and dark energy . Dark energy and white holes. The dark energy we observe could be from white holes from another part of the universe. I wonder if there is any research on that?
As for MOND, there's also another assumption, which doesn't includes the MOND, but assumes that our universe could be anisotropic. Check paper Metric dynamics by S.V. Siparov for more info. (it's probably has some connections with metric dynamical system studies in general)
Hi ! Sorry if I've missed a video you've done but if you haven't, maybe a video about science discoveries that happened accidentally? :)
You are appreciated
Good video!!!
The oxygen levels on Mars are very interesting. Thanks for the video.
Another great video as always, I believe it has been shown that ancient hominids responsible for the ancient cave art, took naturally occurring hallucinogens and thus produced the odd creatures and figures seen in the artwork, basically they were tripping!! Of course Ancient Alien believers would say they're depicting aliens.
I've seen an article about the dwarf planet with rings and thought at the time that rings around a planet that shouldn't be there suggest that the ring(s) is temporary and will eventually become a moon or moons. It may have not collapsed yet, but is there any indication as to when the material got there? A collision of objects could have happened not that long ago, but still far back enough nobody on Earth would have seen it considering we're talking about an object that was only relatively recently discovered (2002).
I mean, we have what we think is a decent understanding of how rings and moons form and behave, but we've not exactly seen it happen since they aren't every day events in our star system and likely change on long time scales (with respect to human lifetimes). It could be that the Roche Limit is pretty accurate, but the outer ring around Quaoar is very new and is in the process of either slowly escaping outwards or accreting into a small moon. It could also be that the bits that make up the outer ring are moving too fast to "stick" when colliding and it will take a while until a more uniform velocity causes more accretion. I do remember reading there is evidence of some moonlets (or basically bigger rocks) within the ring causing some gravitational effects within the ring, so it might just be a transitional phase we got to see, which is pretty lucky.
Well, thank goodness discoveries _do_ come at breakneck speed. That way, we might just achieve something as a species before we finally hit the "off" button and make ourselves extinct. I'm sure that's coming sooner than we think.
The most unusual scientific discovery of the last several years was that of a possum which broke into a pastry shop. They eat... They feast... They - evolve... Just as we must. Ain't that disturbing...?
Seagulls are a common part of my childhood and adult life. I was born in Biloxi, right on the Gulf of Mexico. Then I moved to New Orleans when I was 8, right by Lake Pontchartrain. So I’ve always lived close to the water, so seagulls are a familiar sight. The ones on the Lake are brave. They will swipe food from a picnic table inches away from someone eating. My fries were robbed by a seagull who basically dive bombed the table with his friends. They aren’t scared of people, but they don’t like dogs…lol
Gegenschein - Against Shine 😅
Long time listener here JMG, love your videos. So its with the utmost respect i give a tiny criticism; 8:30 when talking about the "singularity versus dark energy in a black hole" i find this misleading and simaplified. Frankly both terms represent almost total unknowns. They dont known what if anything resides at the center of a black hole, whether its a separate force or anything. Unless there are recent discoveries around dark energy i havent heard yet.
Off topic
Empty solar systems… a star(s) without planets. How rare or common is it?
Giants stars which live fast and die young like Betelgeuse may not have planets because of the short life span (10 to 20 million years). But in general I think that most stars do have planets.
13:46 and weird Xenon too..... and pyramids...and faces... and lizzid peeple. FEAR THE CRABCAT
Where is your thought. In a dark place with the fire of your imagination. It was intuition that led early ancestors into caves.
“The mayonnaise may be moving” delicious yet spooky
Nice one.
Just imagined a scenario where huge chunks of atmosphere freeze so quickly they are flung centrifugally rather than falling, yet only nearly reach escape velocity, “falling” back as gas.
11:31 I've independently suspected this for a while
My takeaway from this video is we should examine superstores for quantum insects in the freezer section.
A fascinating broadcast as usual, Sir. The giant lacewing thing, though, comes across as fairly duff science. A single lacewing rocking up somewhere doesn't exactly explain a trend amongst lacewings as a whole. It could have been a hitchhiker (most likely, especially given its location) or simply blown off course. Sometimes, a Monarch butterfly will fetch up on European shores, far from its usual migration route across continental America. No-one is suggesting that this indicates a trend.
I'm pleased to see more weight of evidence for Martian life. The same evidence, in fact, that was found on Mars by the Viking lander in 1976. But it was decided, on reflection, that that compelling evidence was not compelling enough and that somehow the robotic analysis had been fluffed. It does a disservice to the team involved with this project, and also wasted an insane sum of money, for this viewpoint to have been maintained for so long.
As to the lacewing, as I said it merely has reappeared in an area it was formerly indigenous. Yes, it could have hitched a ride from the western US on some produce, but is that more likely than insect specialists that are far from omnipresent falling for selection bias and prematurely declaring the lacewing's former range defunct? I'm skeptical.
As to the Mars life, I knew one of the principal researchers. The late Dr. Patricia Anne Straat. And she maintained, as did Gil Levin who designed the experiment, that the Viking detection was valid. I did an Event Horizon interview with Dr. Straat before her passing that's up on UA-cam. The problem is that it really wasn't compelling enough. How does the upper crust of the Martian soil provide both water and protection from UV enough to sustain robust enough microbial life to be detectable by a 1970's chemical sniffer? Granted there are biases there, but in the face of perchlorate and abiotic chemistry that might have happened, I'm not sure it's very compelling at this stage, though I'm fully open. Could be wrong, but that's better than jumping to conclusions. A repeat of the experiment, perhaps better designed and more specifically tailored to detecting chirality might be warranted but NASA is still a bit gun shy on direct life detection experiments because of the past.
How do you make such great content so fast!?
Another JMG video in a few days? The developers of the simulation in which we live try to make us happy, as it seems.
is there an audiobook of you reading your own book?
As long as we talk more science and debate based on facts and evidence instead of ego and politics, we will make a better future for all.
I've always thought that Zodiacal Light was an awesome name for a Lighthugger starship....if I ever get a yacht, thats what im gonna name it. (its the name given, by a hyperpig character in Alistair Reynolds' novel 'Redemption Ark', to a pirated/siezed giant starship designed to accelerate continuously until its kissing lighspeed....hence the name 'lighthuggers')....except i think ill pronounce it Zoe-diya-cal....rolls of the tounge a bit better.
Cool
Would you talk about the younger dryas impact theory
i love this
Imagine if we discover life on Venus, Mars, Ceres, the moons Jupiter and Titan. Would be wild.
I haven't heard much lately about the new hypothesis of Bleak Matter.
I'm so happy I got to be in the JWST era. What a great time to be a human.
New JMG on a Friday afternoon
Black holes can be both. They have a singularity that eats matter and dispenses it in another dimension. That matter now interacts with our universe from the other side.
Telescopes are our way of seeng into the past.
Art is our way of sending a message into the future.
🤓💚♾️
Heard you say something what sounded like Duna and took me ages to work out what you meant lmao. Kerbal brain.
The cave painting one might be as simple as survivorship bias. There are rock paintings on rocky outcrops at least in Finland, and presumably elsewhere too, but when it comes to prehistoric art, the pieces in caves are globally much better-known, because those seem to be more common nowadays. I'm just hypothesizing here, but it seems pretty likely that humans would paint on any surface they can find and the ones on cave walls are just more likely to survive.
I love the idea that, in the not-so-distant future, there could be specific nature preserves that are entirely manmade structures. We need to get congress to declare that Wal-Mart in Arkansas a protected habitat for the Giant Lacewing 🤣
Am I the only one who vociferously objects to the IAU's naming convention for exoplanets? The planets are named in the same category as a system's stellar components? The star is A, the first planet outward is B, etc? How ridiculously provincial. We stopped calling Sol a "planet" centuries ago. It's a different thing. I prefer the more descriptive convention used by, yes, science fiction where the stars are listed alphabetically and the planets numerically. Follow me! We must rebel against our IAU overlords!!
Wow, you really can find just about anything at wallmart.
Has anyone tried one of those big computer simulations with MOND instead of Dark Matter? I'm particularly interested in models of the Big Bang, since current models are pretty detailed, and I've never heard how MOND would affect those (that they would necessarily change considerably is the obvious part, but has any work been done on the details?).
Absolutely, but some galaxies seem to have no dark matter, and sometimes that seems to be because they've collided with another galaxy that now has *more* dark matter than we expect. That is the reason MOND isn't more mainstream as an explanation for dark matter, though they can simulate it.
What was that at the end John? 😂