Space exploration began with the launch of Sputnik and Astrophysics was born as the application of physics to the phenomena observed by Astronomy, which etymologically means laws of the stars.
There are 2759 entries in this glossary.| Term | Definition |
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| Peculiar Motion 2 |
The individual motion of a galaxy or cluster of galaxies over and above that associated with the general expansion of the universe.
See also: Hubble flow.
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