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

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How much of the human body is actually water? I've seen anecdotes claiming everything from 60% to 95%. Also is it even accurate to say things like blood, cytoplasm, and cerebrospinal fluid are water-based, or are they a mixture of chemicals all their own?

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I have a blanket that's fuzzy on one side and slick on the other side. When I lay under it fuzzy-side down, is it really keeping me warmer, or is it just my imagination?

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How is it possible for scientists to predict the properties of the products of a chemical reaction, if they've never dealt with those specific products before?

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What does it mean for light to be a wave?

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Can you lose the sense of proprioception like you can lose your more well-known senses?

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Trying to help a friend study science and for all my searching, I can't answer this: Why do atoms become isotopes?

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Is it possible to teach the brain new senses? What has been tried successfully?

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Why can't anything made of matter go the speed of light?

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Before the days of orbiting telescopes, how did astronomers use spectral lines to determine chemical composition of stars, without the results being affected by the Earth's atmosphere?

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Is it possible to look at a point in the night sky where the Big Bang happened? If not, why not?

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Title	Upvotes	Mark as read	Favorited	Rating	Add to a list
How much of the human body is actually water? I've seen anecdotes claiming everything from 60% to 95%. Also is it even accurate to say things like blood, cytoplasm, and cerebrospinal fluid are water-based, or are they a mixture of chemicals all their own?	3
I have a blanket that's fuzzy on one side and slick on the other side. When I lay under it fuzzy-side down, is it really keeping me warmer, or is it just my imagination?	3
How is it possible for scientists to predict the properties of the products of a chemical reaction, if they've never dealt with those specific products before?	3
What does it mean for light to be a wave?	3
Can you lose the sense of proprioception like you can lose your more well-known senses?	3
Trying to help a friend study science and for all my searching, I can't answer this: Why do atoms become isotopes?	2
Is it possible to teach the brain new senses? What has been tried successfully?	2
Why can't anything made of matter go the speed of light?	2
Before the days of orbiting telescopes, how did astronomers use spectral lines to determine chemical composition of stars, without the results being affected by the Earth's atmosphere?	2
Is it possible to look at a point in the night sky where the Big Bang happened? If not, why not?	2