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

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If the universe is 13.5 billion years old, and it takes the milky way 200 million years for a full revolution, how did the Galaxy form a full spiral in only 68 rotations?

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Is the spin rate of SgrA (or any SMBH) is 0.1 a lot or a little? (ELI5)

1 upvotes

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Is the spin rate of 0.1 for SgrA (or any SMBH) a little or a lot?

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Title	Upvotes	Mark as read	Favorited	Rating	Add to a list
If the universe is 13.5 billion years old, and it takes the milky way 200 million years for a full revolution, how did the Galaxy form a full spiral in only 68 rotations?	1
Is the spin rate of SgrA (or any SMBH) is 0.1 a lot or a little? (ELI5)	1
Is the spin rate of 0.1 for SgrA (or any SMBH) a little or a lot?	1