/u/halosos's posts in /r/askscience

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I know there cant be perpetual motion, but why doesn't this work?

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Is the effect of gravity instant or is it constrained by the speed of light?

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Could a rocket be launched from a floating platform?

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Why are we one of the only animals to have beards and moustaches? What did they do on an evolutionary level and why only the men?

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From an evolutionary standpoint, why do only men have facial hair?

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How do we work out the 'sea level' of other planets?

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Can you survive on Mars with nothing but an oxygen tank? Also, would it be possible to take a breath or two of martin air?

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Could we, in theory, release a large amount of gas in a retrograde orbit to slow down all of the junk satellites?

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Does gravity have a speed?

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Could a portion of space time be 'inflated' and sealed of to create a 'bubble' universe?

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Title	Upvotes	Mark as read	Favorited	Rating	Add to a list
I know there cant be perpetual motion, but why doesn't this work?	1
Is the effect of gravity instant or is it constrained by the speed of light?	1
Could a rocket be launched from a floating platform?	1
Why are we one of the only animals to have beards and moustaches? What did they do on an evolutionary level and why only the men?	1
From an evolutionary standpoint, why do only men have facial hair?	1
How do we work out the 'sea level' of other planets?	1
Can you survive on Mars with nothing but an oxygen tank? Also, would it be possible to take a breath or two of martin air?	1
Could we, in theory, release a large amount of gas in a retrograde orbit to slow down all of the junk satellites?	1
Does gravity have a speed?	1
Could a portion of space time be 'inflated' and sealed of to create a 'bubble' universe?	1