Why The Juno Spacecraft is Afraid of the Dark
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- Опубліковано 10 вер 2024
- It's been 3 years since Juno arrived at Jupiter and it's array of sensors have transformed our understanding of the planet. It makes low passes over the giant planet every 53 days and due to timing of these orbits it was going to end up in Jupiter's shadow for 12 hours, long enough to kill the spacecraft.
Find out more about Juno here:
www.nasa.gov/m...
Jupiter image in thumbnail created by:
NASA/JPL-Caltech/SwRI/MSSS/Roman Tkachenko
Video title: why is Juno afraid of the dark?
Scott: gives us the reason, then goes on a tangent about all the awesome stuff Juno has discovered.
The first hit is free.
@@scottmanley What's the mechanism that would cause cold conditions to kill a spacecraft? What would fail?
@@MushookieMan Probably the processors being unable to function below certain temperatures. You can cool a computer cpu to far below zero by pouring liquid nitrogen directly onto the die, but it can't be exposed to moisture caused by condensation. This wouldn't be a problem in a spacecraft, as its components would be installed in moisture-free compartments, but in addition to condensation, capacitors don't function well at lower temperatures, and cease to function at all below a certain point. Here's a decent explanation: superuser.com/questions/506856/is-it-dangerous-to-run-a-cpu-in-an-extremely-cold-environment/506916#506916
@@scottmanley Darn clickbait, where you make an accurate statement then go on to immediately explain precisely the reason and then fill in with relevant and interesting related background information!
@@scottmanley I smell a trap
The NASA rule for acronym gymnastics: it it doesn't fit, just omit.
JUICE? More like JIME
I love how Juno flies towards Jupiter like a shuriken with a hard drive armature.
I really wish I had made the joke about Juno looking like a fidget spinner, back when they were significant.
Why?
Back from work => Scott's channel => Something about Juno => *joy and blissfulness ensue*
Jupiter, the Bringer of Jollity !
exactly my situation, I just got back from work
So say we all!
"Why is Juno afraid of the dark?"
"Jupiter's haunted."
"What?"
"Jupiter's haunted."
I see what you did there
I mean, have you heard the sounds it makes? Obviously haunted.
Oooh this sounds like a really interesting writing prompt
Moon’s haunted...
@@MrZylix-6 everybody gangsta until 049 goes [REDACTED]
"sir we've developed a revolutionary system that directly and unequivocally detects life itself. But unfortunately we're unable to devise an appropriately relevant to the mission based name that boils down into a really clever acronym." "What? No acronym? Scrap the program. Pull the funding. Come back when you have a name we can sell to the public." "
In 14 minutes you inform, delight & inspire. For someone who had a tear in the eye when Cassini ended, you have given us another beacon of hope for science.
The statement "The Juno spacecraft is afraid of the dark" reminds me of Opportunity's last "words"...
oh no
not another one
"Juno to Earth: I'm not going around there, it's dark! I might get eaten by a grue!"
@Cross Van Dust Machinery can have personalities, perhaps even souls. Back when the Mars rovers were launched, some of the NASA people who were involved with them (and also some of the GOES and Solar satellites) set up journals for the spacecraft. I always considered them people (and I talk to my car).
@@gcewing Clap your hands three times and shout "Queepa!"
Pioneer 10
That picture of Io's shadow reminds me of that one scene towards the end of '2010'
MrGoesBoom my thoughts exactly
"It's shrinking!!!!"
"All these worlds are yours EXCEPT Europa"
He's got the Io flux tube getting a mention in here too. Clarke was a fabulous science writer.
@@JustFamilyPlaytime attempt no landings there
One reoccurring theme with these space missions that really piques my interest is thermal management. It seems like a lot of the troubles and worries come from not being able to keep warm or cool out there. It seems like thermal management is a very basic need, with plenty of room to experiment and improve.
"whatever spacecraft do when they've got time on their hands"
they watch football, jon bois did a documentary about this
I understood that reference. 17776 is a masterpiece.
It has a "microwave" so I like to think it makes popcorn and watch movies.
Jon Bois charts are the bomb
I would like to thank this comment for introducing 17776 to me. I read it last night and I love it.
I didn't know Jupiter has the third pole, learned something new everytime from your video. Thank you.
2:48 that's the actual photo? Thats incredible.
Totally.
Aren’t they composite images?
@@essemcee Either way, it doesn't really matter. Photographic astronomy is totally valid whether a picture fits in a single field of view or not. I use a high focal length Schmidt-Cassegrain telescope for my astrophotography. It has a narrow field of view. For something like my image of Sh2-184, I couldn't fit it in one field of view. Instead, I used two images of the same region, offset so that 30% of the vertical width would overlap. I stacked and processed the raw sky data in the same way for each, and then used Microsoft's Image Composite Editor (Freeware from Microsoft) in order to align them and combine them into a single image. I can link you to videos detailing the process in greater depth, if you'd like.
Cheers & I hope this helps,
Rob
@@essemcee Keep in mind, that moon is closer to Jupiter than our moon is to the Earth, so yes, the shadow looks that sharp and big.
I have seen Io's shadow on Jupiter with my telescope which is nothing special, just a normal 6 inch reflector, and if you record videos of Jupiter then stack all the good frames, you can get even more detail.
Composite or not that's a real photo, I know, it doesn't look like it but you can be 100% sure is as real as they get.
@@robsbackyardastrophotograp8885 thanks just trying to get perspective. I just got my first glimpse of Saturn and Jupiter and it's 4 visible moons a few weeks back, now I'm hooked. It's stunning to imagine what's possible if I can see our "neighbors" with a 127mm reflector, what's possible with JWST?!...
10 hour burn.... wow, thankfully KSP's RCS is significantly more powerful
And engines are 100% reliable
About as much time as spent by Bob Kerman pushing the rocket into a non-lithobraking orbit when you run out of fuel
Unless you're in RO. Either I'm terrible at that mod, or there's some terrible mid-game balancing decisions.
And the kerbin system is 1/10th the size!
That sounds more like the Nuclear Engine to me.
It was the Monolith
The vortices trailing off the back of the red spot are stunning. 11:37
Juno is my picture this month on my calendar Scott I really do like this mission, spacecraft is awesome looking
Even better when you think of the name. All of Jupiter's moons are named after his affairs and lovers. Juno is the name of his wife. Nasa literally sent Jupiter's wife to check on him and all his lovers.
MrGoesBoom, Ganymede, from a time when paedophilia was socially accepted. 🙁
Absolutely amazing, gas giants have always had a special place for me, they are always overlooked (especially in games, I’m looking at you space engine), then again, they are such dynamic systems. The perfect balance of fluid dynamics, not so hot that the systems either get larger or get destroyed, and the right size to form massive fluid structures.
Wow! What a great smorgasbord of information about the Juno mission! Had forgotten about those cyclones at the poles!
10 hour thruster burn has got to really hurt fuel reserves.
Alternative is death; you choose!
@@icollectstories5702 Choose and perish!
I mean, the hydrazine doubles as main propellant, which they budgeted appropriately, so it might be fine
Navigating by compass on Jupiter must be a nightmare.
0:41
Ivanova: I've always had a hard time getting up when it's dark outside.
Sinclair: But we're in space. It's always dark outside.
Ivanova: I know, I know.
Glad you had time to type that given how long it takes to maintain that centari hair.
.... Do you think Bernie is one?
"The ions get formed when the atoms fall from Io".
Well, makes sense...
Awesome, inspirational stuff! I had no idea the raw imagery was available for amateur enthusiasts. I’m confident your words will help get people involved.
Scott, you said, "less rare" but what I think you meant was "medium rare".
Thanks Scott for the Juno update. Will try to find time to watch that 90minute talk you mention. So much data is coming in from these missions now that simply studying it is a form of pure research!
Once again, a very valuable contribution! Many, many thanks for your efforts!
Solar ecplises on Jupiter can even be seen with amateur telescopes and they hapen pretty often. Within a time frame of one night you can see the shadow moving across all of Jupiter (and of cause the respective moon too, Io is of cause the fastest). It's one of the most beautiful things about watching planets with a telescope.
13:24 "I have sort of barely scratched the surface..."
Isn't that practically impossible on a gas giant? :-D
usually practically impossible and inadvisable for any spacecraft
There is properly a rocky body in the center of Jupiter
More or less but I think there is a boundary inside Jupiter where there is no liquid metallic hydrogen and that could be defined as the surface ( I read this somewhere ), I think they even use this but I don't remember ;)
Its still a "gas giant" then?
Joseph Neider would say yes but it depends on the definition of a gas giant
I loved this video. I had no idea they were going to get all this data! Amazing! Thanks Scott.
The Juno spacecraft is awesome. I find it awesome that we can put artificial satellites in orbits around planets that are not earth. Science is awesome. Great video, keep up the good work. The pics from Juno are just beautiful. I really like looking at those beautiful pics. I liked this video.
5 Newtons- so about the thrust of an Estes B or C size model rocket engine, albeit for “ a few” more seconds.
Are we sure this spot isn't being caused by the Monolith ala "2010 Odyssey Two"?
NASA checked 🤕 nothing there but a solid Rock and no monolith 🤔
My god, It's full of stars!
Dhun !
Dhuun !
Dhuuun !
Dah . Dahhhhh !!! :D :D :D
kudos for the runescape reference
@@BeeKisses 2001: A Space Odyssey. Not to be confused with Space Oddity by David Bowie, (though the former inspired the latter.)
@@BeeKisses whaat was the rs reference lol was only half paying attention... to busy playing rs atm
2010 was predictive programming. Jupiter is more massive than objects larger than it because of its density. They got the physics wrong. It will become a star.
That picture of the io eclipse is so cool
We're fortunate to be living in this glorious era for space science! It's good to see beyond the current strife-filled drama of human existence.
Thanks for the updates Scott!!
Dude that was increadible. I had absolutely no idea we knew that much about Jupiter. This is the stuff I want to know about.
Holy cow. Looking at some of those images, you start to think Lovecraft's cosmicism may have a point. And that's still within our solar system!
The more I look at those Jupiter pictures the more disturbing they seem to me. It's just so damn big and deep.
I hear that Lovecraft was ahead of his time in some ways and that the then-recent discoveries about the scale and age of the universe as a whole weren't well known to the general public at that point. Or something like that.
One of his short stories, The Whisperer in Darkness, mentions a trans-Neptunian planet which I believe coincided with the real life discovery of Pluto. And now there's this hypothetical Planet X out there somewhere...
Just wait until you see who's living there!
@@SimonClarkstone Yeah, the whole "storms the size of terrestrial planets" thing is a bit hard to comprehend, and quite disturbing once you start to get a real grasp on what that means. Saturn is a similar situation, you'd just have to be a bit closer in to start to see what's going on and it's just as nuts.
And the best part is, Jupiter isn't nearly as big as they go.
Great video! Excellent use of NASA's Eyes On The Solar System app.
Amazing, there is so much to learn. I hope something inspires me to make a new type of vacuum tube.
Juno and the New Jupiter?
they should be on UA-cam...
thanks Scott for the overview!
Absolutely cracking video Scott, thanks!
6:56!? The centre is colder? So it is just like the eye of a storm being much more calm than the trailing arms which flair out of it?
Oh 7:02 completes my visualization, I see the funnel shape of it, with the compression effect at the bottom being why temperature is being focused to greater heights...also the blanketing effect of being way down there in the atmosphere.
Thanks for the upload!
Actually we do not know what causes the physical and thermal structure of the red spot. There are theories, but no conclusive explanation for anything yet, not even for it's color which also changes irregularly (sometimes only bearly being what most would call "red"). For example, one phenomenon is that the upper atmosphere just above the storm (about 800km above it) is substantially hotter than the rest of the atmosphere at that altitude by several hundred degrees Kelvin (its roughly 1600K). The best theory we have is that acoustic waves from the storm travel upwards and heat up the gas there, but it's still only a theory.
Thank you for the video! As always, very informative and well done.
I love this quote: '...they had to perform a maneuver so it would arrive at Jupiter later than before...'
I should hope so, if it arrived earlier than after, I'd start to question some of the relativistic effects we're seeing. :)
2:05 Beyblade, let it rip!
Thank you very much Scott, appreciate your time and work.
If there's a lot more to be said, I wouldn't mind another video about it.
Obviously, this is just a passive aggressive way of saying this "little tangent" was awesome and I'd love more!
Great round up Scott. A lot of information condensed into 14 minutes.
Wow Scott, I've followed a number of the planetary probes, and scientific papers, and I've never heard of these aurorael (is that even a word? Well, it should be) hot-spots. How very cool. Thanks! And it's good to see you doing science videos again!
But what were all my ESA videos?
@@scottmanley I greatly enjoyed all the ESA videos as well!!! Thanks again for all the awesomely great content!
Great video sir! I'm going to work on some painting with Jupiter videos playing in the background. Have a great day!
Do you ever paint planets like jupiter?
@@maxk4324 I haven't. This was my first time. I only got a basic coloring of background started. I've only done a dozen paintings and I'm not proficient yet, but it's fun. This one will be sci fi. I'm painting an oval shaped canvas, 16"x20" and a woman will be looking at a Jupiter like planet. The edge of the canvas will be a portal like window with the window seal framing the canvas and the women's figure in front of the "framed" edge of the canvas. Acrylics seem clumsy to me so I may start over with oils. Either way. These Juno pictures are truly inspiring. I have to create something with them. The urge is frustratingly potent. Thanks for asking.
Scott I love these videos about a spacecraft and it’s mission and what it does! Can wePLEASE see more videos like this or even make it a series!?
Could see that coming. . . But I think you have confused rotation and revolution.
Fun, educational stuff, Scott. Thank you!
I am a probe who flies alone
And when I'm flying a dark orbit
At Jupiter, or strolling through the park
When the light begins to change
I sometimes feel a little strange
A little anxious when it's dark
Fear of the dark, fear of the dark
I have a constant fear that a battery's undervoltage is near
Fear of the dark, fear of the dark
I have a phobia that a floating xenomorph's always there
-cit. Juno spacecraft performing on live tour
I can watch this kind of video all day
Really enjoyed this...
Scott: Video on Jupiter. “I’ve barely scratched the surface on this” me: nice
“Because P apparently didn’t fit ...” I saw what you did there!
Err, care to enlighten us? :o
en.wikipedia.org/wiki/JEDI
Is that a pee pee joke?
@@2nostromo Or JEPDI, also less cool 😉, got it now. Lol.
Hullo! Awesome stuff! Thanks once again Scott!
Almost 1 Million subscribers! Come on people, double check that you are subbed, recognition is important 👍🏼
"Less rare", did you mean "more rare"? PS, thanks for answering our questions we sent on twitter! :D
either that or he meant less common. Same difference though
I caught that, too. LOL. One little mistake...the internet is unforgiving.
we all knew what he meant enough to correct him ;)
I prefer mine medium.
Fantasic video Scott!
Great explanations!
I’m in school, right now, in class, but I never, ever miss one of Scott’s videos ;)
For interstellar probe missions, it would be good to develop hardware that can reliably recover from complete power loss and deep freeze when the probe gets to the destination. Obviously, this would also be useful for missions where a probe spends extended time in the shadow of a gas giant, or even for Mars rovers stuck in a dust storm.
What, no batteries? I would have thought there would be batteries to take care of things like this.
Or a nuclear reactor that provides enough electricity to keep systems running.
(8:00) Consistent decks of ammonia... Probability of Thargoid presence confirmed.
Thank you so much for all your efforts!
Those pics of the eclipse look like the start of a Stanley Kubrick sci-fi film. Maybe a pre-2001. The whole Juno story could be turned into one. Imagine the 'Houston, I'm afraid of the dark..." scene LOL.
V interesting video, as ever. Thank you.
Juno isn't getting anywhere near as much recognition as it should. Cassini is still my favorite interplanetary exploration mission but damn, Juno brings the heat.
"Juno is flying safe..." nice to hear.
Scott, it the great red spot is a storm, then we should expect the center to be cold near the top and hot near the base. That's what drives the storm. It's a thermal engine. You need the updraft and a downdraft to drive the cyclone and chances are the heat nearer the core of the planet is radiating off into space, therefore creating the necessary convection currents. Neat that we have the depth now though.
Thanks a lot for this brilliant video !
Didn't really realise Jupiter was so ... cool! I gotta learn more now...
I loved this video, Scott. I would love more research explanations. Cheers dude
Is there a „moon spot“ in earths aurora?
This is the part i totally did not understand. How are moons causing hotspots.
Erm, you said "less rare". Did you not mean "more rare"? Just asking!
3:41 That is some orbit! The images are astounding.
The Juno was able to getaway without a RTG due to how the mission orbit was designed.
At the time there was a shortage of Pu-238 especially with other missions needing it.
What do spacecraft like to do in their spare time?
Play "Asteroids"???
I would love it if you could demonstrate how to download and process images from their servers!
Somewhat overusing the word "obviously" here, Scott... Many of these things are not obvious.
Another new intro! Like the STS 1 comm check!
Pedantic mode: At 08:03 the diagram says cloud tops, but the narration says surface. As we all know, gas planets do not have a surface...
I LOVE this video especially the science bit with the very good animations
A video by Dr Becky suggests the Jovial aurora may actually be generated from within Jupiter itself and not caused by the solar wind.
This is the AC currents in the magnetic fields right?
That must have put a huge dent in the available fuel?
What good are fuel reserves in a satellite that is dead? Better to have a satellite that sends back useful data and has no fuel, than a satellite that has fuel but can't send data because it froze to death.
@@fermitupoupon1754 i just dont see why it sbould die... you know its coming so go into hibernation and wake up on the other side.
@@tpottrell You have to keep in mind that it's already 14 months beyond it's expected and planned mission life. And it doesn't carry an RTG for power. So it needs to keep its lithium batteries warm enough to survive the eclipse.
But these batteries and the solar panels that charge them are over 8 years old. Things have degraded and it just can't keep enough of a charge to keep itself alive through the eclipse.
I haven't done any math, but I assume it takes a not insignificant amount of energy to keep 2 55Ah batteries within operating temperatures when the environment reaches temperatures around -200C.
Previous probes all carried an RTG which isn't just a power source, it's also a heat source. But Plutonium 238 isn't exactly an abundant isotope and sadly budgets are finite.
@scott manley: as a music aficionado I'm surprised you didn't use "Fear of the Dark" in the title and use Iron Maiden references
10:38 I recently heard different explanation to Jupiter's aurora. You may want to check out Dr Becky's channel for more info.
Wow, this was amazing! I want to know so much more about all of this!
I struggling to wrap my head around how Juno can be in orbit around jupjup and not have some period of time in shadow, is it just down to the eccentricity of the orbit or is it in some kind of polar orbit where it is always on the day/night boundary?
Its apogee is below the plane of the ecliptic.
@@scottmanley Aw yea, sorry kinda obvious now 😄
Scott Manley : that apogee is a long, long way from home! Apojove?
@@dewiz9596 Brave dude
Amazing video. Thanks for sharing such interesting and yet beautiful content, over and over.
Excellent Science update!
Iron Maiden - Fear of the Dark intensifies! ✊
If your solar powered,you'd be afraid of the dark too.
An extra south pole at the equator? Cool! Puts "our" south Atlantic anomaly to shame...
Hey, have you heard about the Helical Engine? and are you planning a video about it?
That would be good. There have been a lot of clickbaity headlines running around about this thing... and it took some guys in NasaSpaceflight forum all of about two seconds to debunk it as a relatively straightforward misunderstanding of relativity. Scott could explain this well enough to the general spaceflight-enthusiast public. People will listen to Scott.
see the size of the sun from that far away. Big difference from what we see on earth. Probably a lot less heat. a lot less. Thank you Mr. Manley.
beatiful video, thank you
10 hours is a long time to be holding down the H key! Especially without physics time warp!