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

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When spacecrafts need to change to a higher orbit, do they burn sideways or downwards?

39 upvotes

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Serotonin and dopamine are responsible for pleasure. Why don't people use them recreationally, as drugs?

1 upvotes

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What lies beyond the observable universe? Is there an infinite amount of matter in the cosmos?

1 upvotes

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Title	Upvotes	Mark as read	Favorited	Rating	Add to a list
When spacecrafts need to change to a higher orbit, do they burn sideways or downwards?	39
Serotonin and dopamine are responsible for pleasure. Why don't people use them recreationally, as drugs?	1
What lies beyond the observable universe? Is there an infinite amount of matter in the cosmos?	1