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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| Ra-Shalom |
Asteroid 2100, diameter 3 km, discovered by E. Helin in 1978. It is the largest known member of the Aten group of asteroids, whose orbits lie wholly within that of the Earth.
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