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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| Pan |
A small satellite of Saturn 1981 S13 orbiting in the Encke Division in the planet’s ring system. It was found by Mark R. Showalter in 1990 from studies of images taken by the spacecraft Voyager 1 and Voyager 2. Its existence had been predicted as an explanation for observed structure in the rings around the Encke Division. Pan is about 20 kilometres in diameter.
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