Why The Juno Spacecraft is Afraid of the Dark

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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:

Jupiter image in thumbnail created by:
NASA/JPL-Caltech/SwRI/MSSS/Roman Tkachenko

  1. Bradyn Schofield

    SCOTT! You need a podcast, or a radio station! Or both! I’d buy you the crap but alas I’m not a rich man.

  2. Mel Clifford

    That’s no shadow, that millions of TMA’s preparing to collapse the planet!

  3. Warbird Phoenix

    If your solar powered,you’d be afraid of the dark too.

  4. Steve Miller

    Fantasic video Scott!
    Great explanations!

  5. gravit8ed

    farted engines? What an intro!

  6. Oscar Cuchilo

    Amazing video. Thanks for sharing such interesting and yet beautiful content, over and over.

  7. cdogg

    water! on Jupiter! 7:51

  8. Ferrariman601

    Another new intro! Like the STS 1 comm check!

  9. essemcee

    @3:08 are those green imperfections the edge of the images; like 2 dozen images stitched together?

  10. S Rocketry

    I like that intro a lot

  11. Chris Reaney

    Really enjoyed this…

  12. HonoredMule

    1:10 So the earth is 25 times brighter than the sun? o.O

  13. MeLtedLogiK

    Who knew? Our galaxy works more beautiful than we ever thought! :D

  14. The Cheaterman

    5:45 10 hours for 55m/s of dV? Makes you appreciate how powerful KSP ion engines are in comparison, not mentioning its actual attitude control thrusters!

  15. Nick Basel

    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!?

  16. Dark Knighte Apologeticz

    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.

  17. David Analyst

    Great vid! You didn’t include one of the most interesting facts about Jupiter, which is that the wind speed inside the eye is 300 mph. I’m curious why there has been no earth-proportional type of stasis in the weather.

  18. daszieher

    Once again, a very valuable contribution! Many, many thanks for your efforts!

  19. TheTokuin

    its cool to imagine if the big red spot might actually be an impact scar where a solid planet collided with the gas giant but got stuck there at the surface and is slowly sinking down to the core

  20. Martian Engineer

    @Scott Manley Love your content! Could you do a video on why Mercury still has a magnetic field, despite it’s small size and slow rotation?

  21. Matthew Suffidy

    2:24 That’s a damn expensive fan.

  22. Nbec95

    11:29 Who decided to bring a Lego brick out to Jupiter?

  23. L Dewey

    Wow! What a great smorgasbord of information about the Juno mission! Had forgotten about those cyclones at the poles!

  24. Brute Bernard

    Great round up Scott. A lot of information condensed into 14 minutes.

  25. Casey Henrichs

    I loved this video, Scott. I would love more research explanations. Cheers dude

  26. iTheDevil

    2:48 black monoliths are multiplying! =))

  27. Daniel Dulu

    Thank you, this is real science I enjoy.

  28. MeLtedLogiK

    I would love it if you could demonstrate how to download and process images from their servers! <3

  29. kevin cvalciuc

    Juno has been effectively “Shadow banned”

  30. Bruce Fleming

    So when we going to the moon SCOTTIE?

  31. Threesixtydegree Orbits

    Is there a „moon spot“ in earths aurora?

  32. zapfanzapfan

    An extra south pole at the equator? Cool! Puts “our” south Atlantic anomaly to shame…

  33. radarw64

    I loved this video. I had no idea they were going to get all this data! Amazing! Thanks Scott.

  34. Drift11

    8:48 so it turns out saturn is not the only body with geometric figures (it’s hexagon), jupiter also has a square and a pentagon

  35. Jake Aikens

    Hehe, my God, it’s full of stars…

  36. TheWindigomonster

    That picture of the io eclipse is so cool

  37. doobs_402

    Queue- “Intergalactic Planetary, Planetary Intergalactic!” How I imagine Juno spending downtime. ha

  38. Khue Ngo

    I can watch this kind of video all day <3

  39. Anarchy Antz

    Microwaving the great red spot. Kinda like nuking the largest Chimichanga in the solar system.

  40. MrN1c3Guy100

    Man Jupiter is so pretty I wish I could see it out of a window of a rocked. :(

  41. Edax

    That black spot reminds me of 2010: The Year We Make Contact

  42. SüdAntares Cosmonautics

    Iron Maiden – Fear of the Dark intensifies! ✊

  43. Penny Lane

    Wow, this was amazing! I want to know so much more about all of this!

  44. Thad Maciuszek

    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.

  45. Wayne Robinson

    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.

  46. klausvonshnytke

    10:38 I recently heard different explanation to Jupiter’s aurora. You may want to check out Dr Becky’s channel for more info.

  47. Pronto

    The vortices trailing off the back of the red spot are stunning. 11:37

  48. OtakuMage

    Why is Juno trying to look into the Great Red Spot? It wants to find SCP-2399.

  49. TonyP

    That must have put a huge dent in the available fuel?

  50. AnonyMoose

    1:11 and earth really isnt bright at all. crazy!

  51. Arno nümuss

    Amazing, there is so much to learn. I hope something inspires me to make a new type of vacuum tube.

  52. AnticlockwisePropeller

    10 hours is a long time to be holding down the H key! Especially without physics time warp!

  53. Keith Willis

    Erm, you said “less rare”. Did you not mean “more rare”? Just asking!

  54. Josue Callejero

    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!

  55. syaondri

    that moment when you realize your fear of sudden Dark Soul boss in the dark basement is not as dangerous as Juno’s fear of shadows.

  56. Lin Yen Chin

    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!

  57. Sheal Dedmon

    Whenever I need a good laugh I click on a Scott Manly video.

  58. Sean McDonough

    5:10 – Probably sudoku.

  59. dosmastrify

    Are we certain this is not the Monolith

  60. 태선우TaeSunWoo

    Wow. Juno really said “aight imma head out”

  61. RVR121

    “Do not fear the dark fear what hides within”

  62. Floyd Looney

    3:41 That is some orbit! The images are astounding.

  63. Jaroslav Jůza

    12:00 They think that the ions get formed when atoms essentially fall down from Io…
    IO -> IONS

  64. mjproebstle

    ‘whatever spacecraft do when they have time on their hands’
    why, upload scott manley vids of course :)

  65. Fred Gotpub

    “Juno, be ready for emergency burn ! – I’m ready, go ahead ! -Well, be ready for a burn in … 6 months”

  66. Blackholefourspam

    What do think of the proposed “Jovoscope” experiment? and does this maneuver make it more or less likely for the spacecraft to be capable of doing it or the Juno team to be convinced to try it?

  67. Richard Purves

    “Because P apparently didn’t fit …” I saw what you did there!

  68. Sean McDonough

    2:07 – Damn terrorists, screwing with orbits and whatnot!

  69. Steven Edwards

    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. :)

  70. Aidan Byrd

    2:05 Beyblade, let it rip!

  71. Woodworker Don

    What do spacecraft like to do in their spare time?
    Play “Asteroids”???

  72. Sir Billy Ritchie

    Juno is my picture this month on my calendar Scott I really do like this mission, spacecraft is awesome looking

  73. Worawat Li

    I didn’t know Jupiter has the third pole, learned something new everytime from your video. Thank you.

  74. martin aakervik

    “Juno is flying safe…” nice to hear.

  75. Roboprogs

    5 Newtons- so about the thrust of an Estes B or C size model rocket engine, albeit for “ a few” more seconds.

  76. TheOneWhoMightBe

    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.

  77. shoved to the right?

    Or what ever spacecraft do when they are inactive
    V’GER: We evolve and become killers!
    Hal: That’s right David!

  78. Buck Starchaser

    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.

  79. Destructor1701

    Somewhat overusing the word “obviously” here, Scott… Many of these things are not obvious.

  80. Jeff Borders

    “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.” “

  81. s abo

    Are we sure this spot isn’t being caused by the Monolith ala “2010 Odyssey Two”?

  82. Beezqp

    “The ions get formed when the atoms fall from Io”.
    Well, makes sense…

  83. justin h

    2:48 that’s the actual photo? Thats incredible.

  84. Jens Krabbe

    13:24 “I have sort of barely scratched the surface…”
    Isn’t that practically impossible on a gas giant? :-D

  85. TechyBen

    “Less rare”, did you mean “more rare”? PS, thanks for answering our questions we sent on twitter! :D

  86. No no

    Scott, you said, “less rare” but what I think you meant was “medium rare”.

  87. csehszlovakze

    And this is why non-nuclear space exploration is a bad idea.

  88. Christopher Green

    My god, It’s full of stars!

  89. Ace Lightning

    The statement “The Juno spacecraft is afraid of the dark” reminds me of Opportunity’s last “words”…

  90. Dark Guardian

    10 hour thruster burn has got to really hurt fuel reserves.

  91. Andrew Parker

    It was the Monolith

  92. MrGoesBoom

    That picture of Io’s shadow reminds me of that one scene towards the end of ‘2010’

  93. ǝɹɐɯʇɥᵷᴉu evergreen

    “whatever spacecraft do when they’ve got time on their hands”
    they watch football, jon bois did a documentary about this

  94. A Dent

    10 hour burn…. wow, thankfully KSP’s RCS is significantly more powerful

  95. Jules E

    Back from work => Scott’s channel => Something about Juno => *joy and blissfulness ensue*

  96. Glade Air Freshener

    “do the science faster”
    Just a heads up, we’re going to have an orbital spacecraft turned up full blast and aimed at you for the duration of this next test. I’ll be honest, we’re throwing science at the planet here to see what sticks. No idea what it’ll do. Probably nothing. Best-case scenario, you might get some planetary data. Worst case, some pictures, which we’ll throw out.

  97. BlackEpyon

    I love how Juno flies towards Jupiter like a shuriken with a hard drive armature.

  98. Arioch IV

    The NASA rule for acronym gymnastics: it it doesn’t fit, just omit.

  99. Terry O'Carroll

    “Why is Juno afraid of the dark?”
    “Jupiter’s haunted.”
    “Jupiter’s haunted.”

  100. Jerry Rupprecht

    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.

Comments are closed.