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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| Pyxis The Compass |
A small and insignificant southern constellation introduced by Nicolas L. de Lacaille in the mid-eighteenth century. It contains only one star that is brighter than fourth magnitude.
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