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XKCD - What If - SpaceX reference...

Discussion in 'SpaceX' started by SlyWombat, Jan 9, 2015.

  1. SlyWombat

    SlyWombat Member

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    Today's What If... Lunar Swimming

    Call Elon to get a swimming pool to the moon.
     
  2. NigelM

    NigelM Recovering Member

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    That's silly! There's no need to transport water to the moon, just melt some of the sub-surface ice.
     
  3. Yggdrasill

    Yggdrasill Active Member

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    There should have been some analysis of from what height one would be able to jump into a pool of water. With 16% of earth's gravity, 30 meters on the moon should be like 5 meters on earth. And people jump from 30 meters on earth, so those people should be able to jump from 190 meters on the moon. Maybe even higher if you account for the lower terminal velocity!
     
  4. ItsNotAboutTheMoney

    ItsNotAboutTheMoney Active Member

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    Reminded me of an Isaac Asimov short story: For the Birds (short story) - Wikipedia, the free encyclopedia

    The essence of the story is that in low gravity you're better off swimming like a dolphin than trying to fly like a bird. Plus it gave Isaac Asimov an excuse for a pun, which he loved.

    Somebody should let Elon know about the idea. Maybe he'll respond with how awesome Martian swimming will be.
     
  5. wart

    wart Member

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    Never mind swimming. I want to fly.
     
  6. Pricee2

    Pricee2 Member

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    Moon has no atmosphere therefore no terminal velocity. You will accelerate until you go splat.
     
  7. VolkerP

    VolkerP EU Model S P-37

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    This thought experiment presupposes a water filled pool inside a pressurized building on the moon.

    Please go ahead going splat outside. :tongue:
     
  8. SW2Fiddler

    SW2Fiddler Bannd Member

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    Another What If mention recently, this deals with Elon, the Tesla and SpaceX all in one caption.

    what if? Space Jetta
     
  9. JRod0802

    JRod0802 Member

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    I've been reading "what if"'s for a while now, and I literally just realized that if you hover your mouse over an image, there's more text. Some of them are good. Like, there's an image of two cars in orbit above Earth that says "How did you get up here?" "Tesla Software Update. Elon Musk clicked on a SpaceX file by mistake.", but then if you hover your mouse over the image it says "He says they're rolling out a fix which will let us all reenter the atmosphere and land safely on his barge, but no one wants to be the first to try it."

    I think I might be going to back to mouse-hover other "what if"'s now.
     
  10. green1

    green1 Active Member

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    If you don't know about XKCD mouse-overs, you've been missing half the joke on every comic he's ever done...
     
  11. SW2Fiddler

    SW2Fiddler Bannd Member

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    I know and love the XKCD mouse-overs, but like JRod I did not know there was text for the "What If?" illustrations as well. I am about to waste the next hour going back and viewing ALL of these :)
     
  12. JRod0802

    JRod0802 Member

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    Same. I knew about it for the regular comics, but for some reason I never actually thought to check the "What If?" pictures.
     
  13. wart

    wart Member

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    As long as you're revisiting the "What If?" articles, be sure to click on the superscript "footnote" numbers.
     
  14. JRod0802

    JRod0802 Member

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    Whoa. Thanks!
     
  15. S'toon

    S'toon Knows where his towel is

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  16. ecarfan

    ecarfan Well-Known Member

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    That cartoon character does not look anything like Elon.
     
  17. S'toon

    S'toon Knows where his towel is

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