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5 answers
19 votes
Would Luna 15 have been visible to any of the members of the Apollo 11 crew?
Accepted answer
16 votes

On Earth, most of visibility of objects coming from space is created by interaction with the atmosphere. As Moon has no atmosphere, an approaching space object would appear in a similar way to how on ...

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9 answers
33 votes
How would a mousetrap for use in space work?
5 votes

How might a mousetrap for use in space work? How might it differ from terrestrial 1 g mousetraps? Most of mouse traps don't rely on gravity. At least, the classic, spring-loaded, killing traps. ...

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8 answers
36 votes
Wheels vs. tracks for rovers
2 votes

Look up "thrown track". Tracked vehicles actually quite often lose one of their tracks, especially when turning. This is a huge issue, for both civilian an military vehicles. With enough manpower, ...

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