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

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What's the smallest amount of collected atoms that can be detected by the human eye (not necessarily molecules because molecules can vary in size)? like a grain of sand, or.. A tiny piece of aluminum or gold.

49 upvotes

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If earth had a slower rotation (say, 36 or 48 hours a day) would our climate be overall warmer, colder, more varied (hotter days + colder nights), or no change?

30 upvotes

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How large can an earth-like planet be, before it collapsed on itself?

2 upvotes

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Do we know how a caterpillar knows when to stop eating and become a butterfly? Is there a chemical that is released or is it a mystery?

0 upvotes

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Title	Upvotes	Mark as read	Favorited	Rating	Add to a list
What's the smallest amount of collected atoms that can be detected by the human eye (not necessarily molecules because molecules can vary in size)? like a grain of sand, or.. A tiny piece of aluminum or gold.	49
If earth had a slower rotation (say, 36 or 48 hours a day) would our climate be overall warmer, colder, more varied (hotter days + colder nights), or no change?	30
How large can an earth-like planet be, before it collapsed on itself?	2
Do we know how a caterpillar knows when to stop eating and become a butterfly? Is there a chemical that is released or is it a mystery?	0