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

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Is it possible to preserve momentum as one enters into a solar system, orbit a planet AND leave with most of the momentum or more?

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In need of a biological system with documented behaviors at both the herd/swarm and individual levels.

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Once we knew the general structure of the periodic table, how did we fill in all the elements that we had never seen before?

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If extra-terrestrials came to make a permanent settlement/embassy, how would we handle disease/viral exposure?

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Title	Upvotes	Mark as read	Favorited	Rating	Add to a list
Is it possible to preserve momentum as one enters into a solar system, orbit a planet AND leave with most of the momentum or more?	1
In need of a biological system with documented behaviors at both the herd/swarm and individual levels.	1
Once we knew the general structure of the periodic table, how did we fill in all the elements that we had never seen before?	1
If extra-terrestrials came to make a permanent settlement/embassy, how would we handle disease/viral exposure?	1