/u/inspire-change's posts in /r/askscience

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how long does it take a 'flushable wipe' to effectively disintegrate in water?

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the age of our sun is roughly 5 billion years old. the age of our universe is roughly 15 billion years old. we have elements on our planet heavier than iron, so from my understanding at least some of our matter has come from a supernova. is there consensus on the stellar history of our local matter?

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what is the stellar history of our local matter?

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if the sun is mostly hydrogen and helium, why is it's composition so different from that of the rest of the planets in our solar system?

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if there are 10 grains of sand per millimeter, what would be the approximate size of a spherical or cubical volume of a googol of sand? looking for both a numerical answer and a non-numerical answer. non-numerical answer in terms of something relative in size. both guesses and calculations welcome

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how does what we currently know about quantum physics apply to the theory of reality being a simulation? which aspects fit well and which do not? what does the math say?

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rocket fuel calculations: of the fuel on board of an ISS destined launch vehicle, what approximate percentage of that fuel is allocated to lifting/accelerating the mass of the fuel itself?

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why don't we sneeze in our sleep?

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Title	Upvotes	Mark as read	Favorited	Rating	Add to a list
how long does it take a 'flushable wipe' to effectively disintegrate in water?	4
the age of our sun is roughly 5 billion years old. the age of our universe is roughly 15 billion years old. we have elements on our planet heavier than iron, so from my understanding at least some of our matter has come from a supernova. is there consensus on the stellar history of our local matter?	1
what is the stellar history of our local matter?	1
if the sun is mostly hydrogen and helium, why is it's composition so different from that of the rest of the planets in our solar system?	1
if there are 10 grains of sand per millimeter, what would be the approximate size of a spherical or cubical volume of a googol of sand? looking for both a numerical answer and a non-numerical answer. non-numerical answer in terms of something relative in size. both guesses and calculations welcome	1
how does what we currently know about quantum physics apply to the theory of reality being a simulation? which aspects fit well and which do not? what does the math say?	1
rocket fuel calculations: of the fuel on board of an ISS destined launch vehicle, what approximate percentage of that fuel is allocated to lifting/accelerating the mass of the fuel itself?	1
why don't we sneeze in our sleep?	1