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

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Why don't galaxies orbit around a central point they way stars do in galaxies and planets do around stars?

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If our hands were the size of an atom, and we held an atom or touched it with our fingers, what would it look and feel like?

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Given that the extinction of the dinosaurs paved the way for mammals to flourish and subsequently humans to flourish, if we were to discover life on another planet would a similar scenario be required there for the existence of intelligent life?

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How does blood know when to coagulate?

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If we could somehow magically shrink down to the molecular level, what would we see and feel? What about the atomic and sub-atomic levels?

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If we discover a relatively "Earth-sized" planet in the habitable zone around a star, with evidence of water, is there any reason to believe life hasn't formed on it?

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What would happen to a human if all the flora in their body died?

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Why is the pupil in the eyeball black and not clear? How can light pass through to the retina if it is opaque?

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[From my 8 year old]Why do some goats have beards?

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[Serious question]Why am I so gassy after a night of heavy drinking?

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Title	Upvotes	Mark as read	Favorited	Rating	Add to a list
Why don't galaxies orbit around a central point they way stars do in galaxies and planets do around stars?	2
If our hands were the size of an atom, and we held an atom or touched it with our fingers, what would it look and feel like?	1
Given that the extinction of the dinosaurs paved the way for mammals to flourish and subsequently humans to flourish, if we were to discover life on another planet would a similar scenario be required there for the existence of intelligent life?	1
How does blood know when to coagulate?	1
If we could somehow magically shrink down to the molecular level, what would we see and feel? What about the atomic and sub-atomic levels?	1
If we discover a relatively "Earth-sized" planet in the habitable zone around a star, with evidence of water, is there any reason to believe life hasn't formed on it?	1
What would happen to a human if all the flora in their body died?	1
Why is the pupil in the eyeball black and not clear? How can light pass through to the retina if it is opaque?	1
[From my 8 year old]Why do some goats have beards?	1
[Serious question]Why am I so gassy after a night of heavy drinking?	1