First up-close images of Mars’s little-known moon Deimos

Re:First up-close images of Mars’s little-known moon Deimos by JKCalhoun on Thursday April 27, 2023 @10:28AM (#35728652)

Somewhere I read (was it Clarke?, Asimov? ... who knows) that you could pitch a baseball on the surface of Deimos, wait some number of hours (minutes?) and it would have orbited and returned from the opposite direction, you could then hit the ball with a bat and some time later catch it on the re-orbit and declare yourself out.

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Re:First up-close images of Mars’s little-known moon Deimos by Symmetry on Thursday April 27, 2023 @11:45AM (#35729818)

Escape velocity is just around 5 m/2 so don't pitch it too fast or it won't come back! Even a Little League pitcher should be able to throw a ball at 20 m/s or so.

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Re:First up-close images of Mars’s little-known moon Deimos by euroderf on Thursday April 27, 2023 @12:05PM (#35730174)

It should be possible to jump up off the surface at this speed too eh

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Re:First up-close images of Mars’s little-known moon Deimos by jandrese on Thursday April 27, 2023 @12:58PM (#35731089)

Probably difficult to do it as a high jump, but a person on a bike hitting a small ramp could do it no problem, assuming you could even find enough traction to get going fast enough in such light gravity.

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Re:First up-close images of Mars’s little-known moon Deimos by dsfyu404ed on Thursday April 27, 2023 @03:43PM (#35733538)

Skateboard and fire extinguisher.

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Re:First up-close images of Mars’s little-known moon Deimos by The_Colonel on Thursday April 27, 2023 @04:27PM (#35734065)

No need for skateboard in that gravity.

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Re:First up-close images of Mars’s little-known moon Deimos by chmod775 on Thursday April 27, 2023 @08:15PM (#35736096)

If you can jump around 128cm high on earth (measured at your center of mass), you can accelerate yourself to more than 5m/s upwards.

Most healthy adults should be able to do that, especially with a running start. It's about as much as you need to do to get a passing grade in PE at age 16 in most places. Also in this hypothetical you don't have to fight much gravity while accelerating - only inertia.

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Re:First up-close images of Mars’s little-known moon Deimos by mr_toad on Thursday April 27, 2023 @08:33PM (#35736213)

Getting a running start would be a problem when each step launches you into the “air”.

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Re:First up-close images of Mars’s little-known moon Deimos by AnimalMuppet on Thursday April 27, 2023 @01:33PM (#35731661)

Pretty sure I can still do 100 m in less than 20 seconds, so...

(Except, as others have said, I wouldn't have the traction to accelerate.)

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Re:First up-close images of Mars’s little-known moon Deimos by dmoy on Thursday April 27, 2023 @12:18PM (#35730379)

I think it was Carl Sagan and Phobos. Not Deimos.

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