/r/askscience

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When I take 2 hammers and hit the heads together, they appear as though they don't really touch each other. What's happening?

540 upvotes • IN_U_Endo

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Ask Anything Wednesday - Economics, Political Science, Linguistics, Anthropology

540 upvotes • AutoModerator

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Would a child from 10,000 years ago fit in if raised from birth in today's society, 100,000 years? How far back could we go before we have a significant degradation of cognitive ability?

540 upvotes • tokeable

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Why is the skin on our lips different from the skin on the rest of our body?

540 upvotes • robnock

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If I fell from a plane and reached terminal velocity over a large body of water, is there any position and/or angle at which I should try to hit water so as to increase my chances for survival?

539 upvotes • Twin-Reverb

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Why do we launch space-bound shuttles straight up?

539 upvotes • Spycicle

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Have all visible (to the naked eye) stars been named / cataloged?

539 upvotes • the_blake_abides

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Two masses are on an in-spiraling trajectory around a black hole. When one of the masses crosses the event horizon, what happens to their mutual gravitational interaction?

539 upvotes • DJ_MD9

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How does blood get to every cell?

539 upvotes • gumshot

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How does the hippocampus transfer short term to long term memory?

539 upvotes • rlx14322

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Title	Upvotes	Author	Mark as read	Favorited	Rating	Add to a list
When I take 2 hammers and hit the heads together, they appear as though they don't really touch each other. What's happening?	540	IN_U_Endo
Ask Anything Wednesday - Economics, Political Science, Linguistics, Anthropology	540	AutoModerator
Would a child from 10,000 years ago fit in if raised from birth in today's society, 100,000 years? How far back could we go before we have a significant degradation of cognitive ability?	540	tokeable
Why is the skin on our lips different from the skin on the rest of our body?	540	robnock
If I fell from a plane and reached terminal velocity over a large body of water, is there any position and/or angle at which I should try to hit water so as to increase my chances for survival?	539	Twin-Reverb
Why do we launch space-bound shuttles straight up?	539	Spycicle
Have all visible (to the naked eye) stars been named / cataloged?	539	the_blake_abides
Two masses are on an in-spiraling trajectory around a black hole. When one of the masses crosses the event horizon, what happens to their mutual gravitational interaction?	539	DJ_MD9
How does blood get to every cell?	539	gumshot
How does the hippocampus transfer short term to long term memory?	539	rlx14322