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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| Baryons |
A collective name for a group of subatomic particles including protons and neutrons together termed nucleons and a number of particles of short half-life that produce a nucleon when they decay.
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