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

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Did the Earth's orbit immediately stabilize into the ~365.25 day cycle at the formation of the solar system, or was it a much longer cycle? And if so, how much time did it take? Is it still changing?

3630 upvotes

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Has the human penis grown larger over time due to natural selection?

1049 upvotes

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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

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If two identical nuclear weapons were detonated at the same location, would the yield be exactly double? Would there be losses in power? Would the fireball radius be larger than if it were just one weapon?

51 upvotes

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What is the difference between water that freezes clear and water that freezes cloudy? And is there a maximum thickness to clear ice, or can clear ice only be thin?

37 upvotes

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What exactly is the purpose of removing a dog's dew claws?

24 upvotes

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Is there any science behind "near-death experiences?"

2 upvotes

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What is the physical difference between a curly and straight tail on a dog? What causes that difference in the anatomy?

2 upvotes

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Why does acne hurt so much more on the philtrum and nostrils than on other parts of the body?

1 upvotes

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If I pour a glass of milk in a clean room, will it expire more slowly than in, say, my kitchen?

1 upvotes

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Title	Upvotes	Mark as read	Favorited	Rating	Add to a list
Did the Earth's orbit immediately stabilize into the ~365.25 day cycle at the formation of the solar system, or was it a much longer cycle? And if so, how much time did it take? Is it still changing?	3630
Has the human penis grown larger over time due to natural selection?	1049
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
If two identical nuclear weapons were detonated at the same location, would the yield be exactly double? Would there be losses in power? Would the fireball radius be larger than if it were just one weapon?	51
What is the difference between water that freezes clear and water that freezes cloudy? And is there a maximum thickness to clear ice, or can clear ice only be thin?	37
What exactly is the purpose of removing a dog's dew claws?	24
Is there any science behind "near-death experiences?"	2
What is the physical difference between a curly and straight tail on a dog? What causes that difference in the anatomy?	2
Why does acne hurt so much more on the philtrum and nostrils than on other parts of the body?	1
If I pour a glass of milk in a clean room, will it expire more slowly than in, say, my kitchen?	1