/r/askscience

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Are there any known conditions under which gravity becomes a repulsive force?

781 upvotes • The_Demolition_Man

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How true is the statement, "Beer before liquor never been sicker, liquor before beer you're in the clear"?

781 upvotes • blakerho

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If the earth's atmosphere was compressed into a liquid, how would it compare in volume to the oceans?

781 upvotes • Thereminz

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why does a wick work in burning kerosene, but not methanol?

781 upvotes • nojbro

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How does your brain know which of your memories are real and which aren’t?

781 upvotes • NamBot3000

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How powerful would a magnet need to be to stop a bullet? What about to alter its trajectory so it is deflected?

780 upvotes • 16th_hop

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Why is it when a speck of something gets on my glasses (dandruff, dust, etc), blowing on it, no matter how hard, doesn't dislodge it from the presumably smooth surface?

780 upvotes • Semyonov

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Why is it impossible for objects weighing less than 0.02 milligrams to form a black hole?

780 upvotes • sourc3original

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I recently learned COVID has a lipid membrane but I was taught in school that viruses are DNA or RNA packed inside a protein shell, so how many different virus physiologies are there and what exactly is COVID made out of?

780 upvotes • bjos144

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Many emojis have taken on their own meanings from memes (e.g. 🍆), often entirely unrelated to the picture (🅱️, 💯, 🗿 etc). When reading ancient languages, how do we know their pictographs didn't also have completely unrelated meanings that came from e.g. cultural memes of the time?

779 upvotes • Lost4468

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Title	Upvotes	Author	Mark as read	Favorited	Rating	Add to a list
Are there any known conditions under which gravity becomes a repulsive force?	781	The_Demolition_Man
How true is the statement, "Beer before liquor never been sicker, liquor before beer you're in the clear"?	781	blakerho
If the earth's atmosphere was compressed into a liquid, how would it compare in volume to the oceans?	781	Thereminz
why does a wick work in burning kerosene, but not methanol?	781	nojbro
How does your brain know which of your memories are real and which aren’t?	781	NamBot3000
How powerful would a magnet need to be to stop a bullet? What about to alter its trajectory so it is deflected?	780	16th_hop
Why is it when a speck of something gets on my glasses (dandruff, dust, etc), blowing on it, no matter how hard, doesn't dislodge it from the presumably smooth surface?	780	Semyonov
Why is it impossible for objects weighing less than 0.02 milligrams to form a black hole?	780	sourc3original
I recently learned COVID has a lipid membrane but I was taught in school that viruses are DNA or RNA packed inside a protein shell, so how many different virus physiologies are there and what exactly is COVID made out of?	780	bjos144
Many emojis have taken on their own meanings from memes (e.g. 🍆), often entirely unrelated to the picture (🅱️, 💯, 🗿 etc). When reading ancient languages, how do we know their pictographs didn't also have completely unrelated meanings that came from e.g. cultural memes of the time?	779	Lost4468