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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| Telesto |
A small satellite of Saturn, discovered in 1980 when the planet’s rings were edge-on and thus invisible as viewed from Earth. It is co-orbital with Tethys and Calypso.
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