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

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If gravitational time dilation also occurs due to being accelerated (via the Equivalence Principle), why would it occur for something in orbit? Orbit is just free fall and thus there is no proper acceleration felt by the orbiting body.

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How close would you have to be to the sun before you could cook a normal bag of microwave popcorn with the microwaves it gives off?

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Does light always travel the same speed for all observers even when it's traveling slower than c?

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How is the time component of spacetime expanding?

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What is the Milky Way's velocity relative to the reference frame in which the CMB is isotropic?

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If spacetime "isn't a thing", but just defined by the distances between events, how can it be curved?

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Are we anywhere close to understanding how subjective experience (sometimes called qualia) arises? If not, are any scientists actively working on trying to understand this better?

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What is the mechanism by which athlete's foot makes my feet itch? It's a fungal infection, but what actually goes on that causes the itching?

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Universe condensed to less than the size of pearl in its early moments?

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Need help understanding how the angular size of distant objects changes depending on the shape (curvature) of 3d space that you're in (related to CMB fluctuations)

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Title	Upvotes	Mark as read	Favorited	Rating	Add to a list
If gravitational time dilation also occurs due to being accelerated (via the Equivalence Principle), why would it occur for something in orbit? Orbit is just free fall and thus there is no proper acceleration felt by the orbiting body.	3
How close would you have to be to the sun before you could cook a normal bag of microwave popcorn with the microwaves it gives off?	3
Does light always travel the same speed for all observers even when it's traveling slower than c?	3
How is the time component of spacetime expanding?	3
What is the Milky Way's velocity relative to the reference frame in which the CMB is isotropic?	3
If spacetime "isn't a thing", but just defined by the distances between events, how can it be curved?	2
Are we anywhere close to understanding how subjective experience (sometimes called qualia) arises? If not, are any scientists actively working on trying to understand this better?	2
What is the mechanism by which athlete's foot makes my feet itch? It's a fungal infection, but what actually goes on that causes the itching?	2
Universe condensed to less than the size of pearl in its early moments?	2
Need help understanding how the angular size of distant objects changes depending on the shape (curvature) of 3d space that you're in (related to CMB fluctuations)	2