sleepyjohn00 (sleepyjohn00) wrote,
sleepyjohn00
sleepyjohn00

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H-R

OK, the Hertzsprung-Russel diagram.  Science geeks know it: it describes the Main Sequence of stellar evolution, from protoclouds to yellow dwarfs (Sol) to supergiants to black holes.

Behold the H-R diagram of Astronomers!



We loves it. Thank you, Bad Astronomer!
Tags: geeks
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