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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| Zone Of Avoidance |
A region of sky near the plane of the Milky Way where absorption by interstellar dust is so great that no galaxies can be seen.
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