observantTrapezium

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Cake day: 2023年6月30日

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  • observantTrapezium@lemmy.catoScience Memes@mander.xyzSeconds
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    10 个月前

    That may be relativists (they would actually measure anything in units of mass, with everything else defined through G = c = 1). Astrophysicists commonly measure mass in solar masses, long distances in parsec (or kiloparsec, megaparsec), short distances in solar radii or AU, and time in whatever is relevant to their problem (could be seconds or gigayears)