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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| Hamal Alpha Arietis; α Ari |
The brightest star in the constellation Aries. It is a giant K star of magnitude 2.0. The name is derived from the Arabic for sheep.
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