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

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If a helicopter were to hover for 12 hours, why wouldn't it end up halfway around the world?

579 upvotes

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Why do matter and antimatter annihilate when they come into contact with each other?

27 upvotes

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Is the plane of Earth's rotation around the Sun parallel to the plane of the Sun's rotation around the center of the Milky Way?

10 upvotes

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Do galaxies in galactic clusters orbit each other on a plane, in a similar way to planets in a star system, or stars in a galaxy?

10 upvotes

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Could dark energy be antigravity?

9 upvotes

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Does the Universe truncate?

4 upvotes

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Why is the Schwarzschild Radius of Planck mass equal to two Planck lengths, and not one?

2 upvotes

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What are the intermediate evolutionary stages of sexual reproduction?

2 upvotes

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Does circumcision reduce sexual pleasure?

1 upvotes

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Why does the current expansion of the Universe imply the existence of a primordial singularity?

0 upvotes

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Title	Upvotes	Mark as read	Favorited	Rating	Add to a list
If a helicopter were to hover for 12 hours, why wouldn't it end up halfway around the world?	579
Why do matter and antimatter annihilate when they come into contact with each other?	27
Is the plane of Earth's rotation around the Sun parallel to the plane of the Sun's rotation around the center of the Milky Way?	10
Do galaxies in galactic clusters orbit each other on a plane, in a similar way to planets in a star system, or stars in a galaxy?	10
Could dark energy be antigravity?	9
Does the Universe truncate?	4
Why is the Schwarzschild Radius of Planck mass equal to two Planck lengths, and not one?	2
What are the intermediate evolutionary stages of sexual reproduction?	2
Does circumcision reduce sexual pleasure?	1
Why does the current expansion of the Universe imply the existence of a primordial singularity?	0