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

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Are there any musical instruments that need gravity to function? What instrument can you not play while in orbit?

9 upvotes

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We've seen shows and articles that estimate damage done to the earth by a asteroid hit. What about something impacting the sun? How big would it need to be to affect life on Earth?

3 upvotes

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What is the reason for fish tails to be oriented vertically and ocean mammal tails to be horizontal?

2 upvotes

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How far away from earth can human civilization be detected?

1 upvotes

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What is the psychological reasoning behind a person assuming a surface is clean or dirty?

1 upvotes

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Is the alcohol content of a stick deodorant high enough to prevent cross-contamination?

1 upvotes

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Why are fireworks made like mortars and not like rockets?

1 upvotes

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Title	Upvotes	Mark as read	Favorited	Rating	Add to a list
Are there any musical instruments that need gravity to function? What instrument can you not play while in orbit?	9
We've seen shows and articles that estimate damage done to the earth by a asteroid hit. What about something impacting the sun? How big would it need to be to affect life on Earth?	3
What is the reason for fish tails to be oriented vertically and ocean mammal tails to be horizontal?	2
How far away from earth can human civilization be detected?	1
What is the psychological reasoning behind a person assuming a surface is clean or dirty?	1
Is the alcohol content of a stick deodorant high enough to prevent cross-contamination?	1
Why are fireworks made like mortars and not like rockets?	1