/u/[deleted]'s posts in /r/askscience

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Is the sun capable of causing an EMP on earth substantial enough to do significant damage to the electrical grid?

792 upvotes

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Tesseract 4th dimension

791 upvotes

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A friend of mine said he only sleeps six hours so he can condition his body to only need six hours. Is there any truth behind this?

770 upvotes

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This is going to sound crude, but - what the hell is wrong with crane flies (daddy long legs)?

770 upvotes

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Have any animals ever been known to take on "pets" from another species?

769 upvotes

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Why do some sounds cause physical discomfort to our ears? Is it because they are actually damaging them?

760 upvotes

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Is there a resting point for matter that enters a black hole? Is all matter that has ever entered into a black hole just laying in one big pile at the center?

751 upvotes

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When food packaging says it has X amount of calories, is that the amount of calories in the food, or the typical amount absorbed by the body?

747 upvotes

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Do animals feel pleasure from human physical contact (petting/stroking)?

738 upvotes

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Why do 3D models of the universe look like an hourglass?

737 upvotes

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Title	Upvotes	Mark as read	Favorited	Rating	Add to a list
Is the sun capable of causing an EMP on earth substantial enough to do significant damage to the electrical grid?	792
Tesseract 4th dimension	791
A friend of mine said he only sleeps six hours so he can condition his body to only need six hours. Is there any truth behind this?	770
This is going to sound crude, but - what the hell is wrong with crane flies (daddy long legs)?	770
Have any animals ever been known to take on "pets" from another species?	769
Why do some sounds cause physical discomfort to our ears? Is it because they are actually damaging them?	760
Is there a resting point for matter that enters a black hole? Is all matter that has ever entered into a black hole just laying in one big pile at the center?	751
When food packaging says it has X amount of calories, is that the amount of calories in the food, or the typical amount absorbed by the body?	747
Do animals feel pleasure from human physical contact (petting/stroking)?	738
Why do 3D models of the universe look like an hourglass?	737