/r/askscience

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If someone with schizophrenia was hallucinating that someone was sat on a chair in front of them, and then looked at the chair through a video camera, would the person still appear to be there?

3700 upvotes • annonomouse2

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What kind of damage could someone expect if hit by a single atom of titanium at 99%c?

3700 upvotes • Rolling_Times

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Why can't we have a system for dividing by zero the same way we have imaginary numbers?

3700 upvotes • SevenTwenty720

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What is the highest a mountain can be? Is there a limit to it?

3695 upvotes • Strandedbagels

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AskScience AMA Series: I am a leading researcher in the areas of cannabis plant science and plant physiology at Volcani Agriculture Research Center, in Israel. My name is Nirit Bernstein and I am researching cannabis plant sciences, and the best ways to grow medical cannabis, Ask Me Anything!

3693 upvotes • AskScienceModerator

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In films depicting the Apollo program reentries, there’s always a reference to angle of approach. Too steep, burn up, too shallow, “skip off” the atmosphere. How does the latter work?

3693 upvotes • one-two-ten

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How much adrenaline is released by our adrenal glands in an "adrenaline rush", compared to the dose administered in an Epi-Pen?

3692 upvotes • Erasmus_B_Draggin

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AskScience AMA Series: We're NASA experts looking for scientists' input on the next decade of biological and physical science research in space. Ask us anything!

3690 upvotes • AskScienceModerator

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How many times do most galaxies rotate in their lifetimes?

3689 upvotes • AlexTheGreat1221

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Why is Greenland almost fully glaciated while most of Northern Canada is not at same latitude?

3689 upvotes • floatingsaltmine

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Title	Upvotes	Author	Mark as read	Favorited	Rating	Add to a list
If someone with schizophrenia was hallucinating that someone was sat on a chair in front of them, and then looked at the chair through a video camera, would the person still appear to be there?	3700	annonomouse2
What kind of damage could someone expect if hit by a single atom of titanium at 99%c?	3700	Rolling_Times
Why can't we have a system for dividing by zero the same way we have imaginary numbers?	3700	SevenTwenty720
What is the highest a mountain can be? Is there a limit to it?	3695	Strandedbagels
AskScience AMA Series: I am a leading researcher in the areas of cannabis plant science and plant physiology at Volcani Agriculture Research Center, in Israel. My name is Nirit Bernstein and I am researching cannabis plant sciences, and the best ways to grow medical cannabis, Ask Me Anything!	3693	AskScienceModerator
In films depicting the Apollo program reentries, there’s always a reference to angle of approach. Too steep, burn up, too shallow, “skip off” the atmosphere. How does the latter work?	3693	one-two-ten
How much adrenaline is released by our adrenal glands in an "adrenaline rush", compared to the dose administered in an Epi-Pen?	3692	Erasmus_B_Draggin
AskScience AMA Series: We're NASA experts looking for scientists' input on the next decade of biological and physical science research in space. Ask us anything!	3690	AskScienceModerator
How many times do most galaxies rotate in their lifetimes?	3689	AlexTheGreat1221
Why is Greenland almost fully glaciated while most of Northern Canada is not at same latitude?	3689	floatingsaltmine