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| sci.optics | Discussion relating to the science of op | 12,750 messages |
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| RichD to All |
| galactic rotation |
| 15 Apr 13 21:45:38 |
0eb0861c XPost: sci.physics.relativity, alt.astronomy From: r_delaney2001@yahoo.com How do astronomers know our galaxy is rotating, how do they measure the velocity? And, how do they measure the rotational velocity of other galaxies? -- Rich --- SoupGate-Win32 v1.05 * Origin: you cannot sedate... all the things you hate (1:229/2) |
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