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

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Is it possible for black holes to 'move' through space and, if so, what would happen if Earth came upon one?

39 upvotes

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What are the approximate ratios of 'stars' in the night sky - what are the relative volumes of Stars to galaxies to planets to satellites etc?

1 upvotes

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I've seen Dark Waters, so I know PFOA is bad. I'd thought my PFTE cooking pans would be OK, however, a cursory search the internets suggests not - would cast iron be the safest for me and my family or are we/the world too far down the PFTE rabbit-hole for any of this to matter?

1 upvotes

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How/can short-term antidepressant use resolve long-term depression?

1 upvotes

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What kind of dynamo could produce enough electricity to power 3 bedroom home for a full day?

1 upvotes

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Is Puccinia Menthae ('mint rust') poisonous to humans?

1 upvotes

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Hygiene benefits aside, do humans cover their noses/mouths when sneezing because regulating the outflow of air helps to expand the sinuses?

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Is it weird that, if I concentrate, I can slow heart rate right down, and could one feasibly kill oneself by doing so?

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What would happen if the earth were struck by an x-ray beam which had been shot across the galaxy from a neutron star?

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If I manually rotated the chuck of an electric drill at 500rpm, could I produce the same amount of electricity as would be required to turn the drill at 500rpm conventionally?

1 upvotes

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Title	Upvotes	Mark as read	Favorited	Rating	Add to a list
Is it possible for black holes to 'move' through space and, if so, what would happen if Earth came upon one?	39
What are the approximate ratios of 'stars' in the night sky - what are the relative volumes of Stars to galaxies to planets to satellites etc?	1
I've seen Dark Waters, so I know PFOA is bad. I'd thought my PFTE cooking pans would be OK, however, a cursory search the internets suggests not - would cast iron be the safest for me and my family or are we/the world too far down the PFTE rabbit-hole for any of this to matter?	1
How/can short-term antidepressant use resolve long-term depression?	1
What kind of dynamo could produce enough electricity to power 3 bedroom home for a full day?	1
Is Puccinia Menthae ('mint rust') poisonous to humans?	1
Hygiene benefits aside, do humans cover their noses/mouths when sneezing because regulating the outflow of air helps to expand the sinuses?	1
Is it weird that, if I concentrate, I can slow heart rate right down, and could one feasibly kill oneself by doing so?	1
What would happen if the earth were struck by an x-ray beam which had been shot across the galaxy from a neutron star?	1
If I manually rotated the chuck of an electric drill at 500rpm, could I produce the same amount of electricity as would be required to turn the drill at 500rpm conventionally?	1