/r/askscience
AskScience AMA Series: I am an engineering professor who is currently studying how far a virus can travel and how 6 feet of social distancing may not always be enough to prevent host-to-host transmission. AMA!
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How do we know galaxies in the ultra-deep field aren't just the same galaxies over and over but from different points in time?
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If we "age" because our cells chop off the ends of our DNA after each replication, how can we produce sperm and eggs which create a baby with "young" DNA?
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Is there a distance at which the interaction between the gravity fields of two black holes would cause one another to effectively 'break open' and allow matter and energy stored within them to escape the system?
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