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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| Giant Branch |
The region on a Hertzsprung-Russell diagram occupied by points corresponding to stars that have evolved into red giants.
See also: stellar evolution.
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