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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| Zodiacal Dust Cloud |
A tenuous flat cloud of small silicate dust particles in the inner solar system. It is believed to be derived from comets and from collisions in the asteroid belt.
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