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並前往http://physics.uwyo.edu/~chip/Classes/ASTR4610/Lec_Distances.pdf

Distances and Units in Astrophysics

Basic Units (commit to memory; astronomers tend to use cgs units) solar mass: 2x1033 g solar luminosity: 4 x1033 erg/s 107 erg = 1 Joule 107 erg/s = 1 W.

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