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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| Nebular Hypothesis |
The theory first put forward in 1755 by the philosopher Immanuel Kant that the solar system formed from a primeval nebula around the Sun.
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