/r/askscience

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Would suction cups not work in a vacuum?

3112 upvotes • scarletice

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If gravity causes time dilation, wouldn't deep gravity wells create their own red-shift? How do astronomers distinguish close massive objects from distant objects?

3111 upvotes • bartonski

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How does SARS-CoV-2 proof read its RNA replication?

3111 upvotes • Richard210363

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AskScience AMA Series: We run a large conservation and research center in Montana focused on restoration and ecology - ask us anything!

3110 upvotes • AskScienceModerator

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How is fat used up during starvation, if you took a 500 pound guy and starved him to death, would he lose all that weight first?

3109 upvotes • AIex_N

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If you put a diamond into the void of space, assuming it wasn't hit by anything big, how long would it remain a diamond? Essentially, is a diamond forever?

3109 upvotes • [deleted]

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Two of the same type of metals will bond together in space?

3109 upvotes • Sgtpeppers1985

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Why don't electrons traveling in the orbitals of atoms lose energy, although they are a mass traveling a narrow space which should require some kind of acceleration to stay close to the atom?

3109 upvotes • arachnofan

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What is the body's conversion efficiency of energy stored in food to energy stored in fat, or energy available to do work with?

3109 upvotes • YbgOuuXkAe

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AskScience AMA Series: Hi! We're Drs. Rebecca Schmidt from UC-Davis, and Cindy Lawler, from the National Institute of Environmental Health Sciences, part of NIH, and we work on how environmental factors can increase risk of Autism Spectrum Disorder. Ask us anything!

3109 upvotes • AskScienceModerator

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Title	Upvotes	Author	Mark as read	Favorited	Rating	Add to a list
Would suction cups not work in a vacuum?	3112	scarletice
If gravity causes time dilation, wouldn't deep gravity wells create their own red-shift? How do astronomers distinguish close massive objects from distant objects?	3111	bartonski
How does SARS-CoV-2 proof read its RNA replication?	3111	Richard210363
AskScience AMA Series: We run a large conservation and research center in Montana focused on restoration and ecology - ask us anything!	3110	AskScienceModerator
How is fat used up during starvation, if you took a 500 pound guy and starved him to death, would he lose all that weight first?	3109	AIex_N
If you put a diamond into the void of space, assuming it wasn't hit by anything big, how long would it remain a diamond? Essentially, is a diamond forever?	3109	[deleted]
Two of the same type of metals will bond together in space?	3109	Sgtpeppers1985
Why don't electrons traveling in the orbitals of atoms lose energy, although they are a mass traveling a narrow space which should require some kind of acceleration to stay close to the atom?	3109	arachnofan
What is the body's conversion efficiency of energy stored in food to energy stored in fat, or energy available to do work with?	3109	YbgOuuXkAe
AskScience AMA Series: Hi! We're Drs. Rebecca Schmidt from UC-Davis, and Cindy Lawler, from the National Institute of Environmental Health Sciences, part of NIH, and we work on how environmental factors can increase risk of Autism Spectrum Disorder. Ask us anything!	3109	AskScienceModerator