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What actually is the mass? [closed]

Since high school, I've been told that the definition of mass is "quantity of matter" (which is absolutely wrong, I guess). If mass is actually a quantity of matter and it is a measure of ...
Kavin Ishwaran's user avatar
2 votes
1 answer
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Does a kilonova leave a high mass remnant?

My understanding of Type Ia supernovae is that they are expected, in most cases, to destroy the white dwarf(s) that went in to them, leaving behind no high density remnants (i.e. no white dwarf, ...
Sean Lake's user avatar
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