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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| Atomic Nucleus |
The central part of an atom, which contains most of the mass of the atom. The atomic nucleus consists of positively charged protons and uncharged neutrons. Therefore, it has an overall positive charge.
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