/u/82364's posts in /r/askscience

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Some say that light colored clothes offer better uv protection than dark colored clothes, some say the opposite; what are the arguments for each?

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In males, how is the urethra effects by normal changes in penis length (and/or rigidity, in the case of erection)?

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At what altitude would a balloon stop moving with the atmosphere, such that the Earth rotates under it?

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How do we look for black holes?

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Mercury astronaut training included astronomy; what was the state of astronomy, in 1959?

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It's been 18 years since Dianne Kelly's Axial Orthogonal Fiber Reinforcement in the Penis of the Nine-Banded Armadillo - have we found any other zero and ninety degree fiber hydrostats?

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How do spectroscopes work?

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Is a perfectly flat focal plane possible?

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Why were the Great Observatories given their respective orbits?

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Are there evolutionary pressures for cold-bloodedness?

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Title	Upvotes	Mark as read	Favorited	Rating	Add to a list
Some say that light colored clothes offer better uv protection than dark colored clothes, some say the opposite; what are the arguments for each?	1
In males, how is the urethra effects by normal changes in penis length (and/or rigidity, in the case of erection)?	1
At what altitude would a balloon stop moving with the atmosphere, such that the Earth rotates under it?	1
How do we look for black holes?	1
Mercury astronaut training included astronomy; what was the state of astronomy, in 1959?	1
It's been 18 years since Dianne Kelly's Axial Orthogonal Fiber Reinforcement in the Penis of the Nine-Banded Armadillo - have we found any other zero and ninety degree fiber hydrostats?	1
How do spectroscopes work?	1
Is a perfectly flat focal plane possible?	1
Why were the Great Observatories given their respective orbits?	1
Are there evolutionary pressures for cold-bloodedness?	1