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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| Ionization |
The process in which electrons are removed from atoms or molecules through collisions between particles or by absorbing a photon. The electrically charged particles are positive ions.
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