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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| Leda |
A small satellite of Jupiter number XIII, discovered by Charles Kowal in 1974. It is only about 15 kilometres across and belongs to a group of four satellites whose closely spaced orbits all lie between 11.1 and 11.7 million kilometres from Jupiter. The others are Himalia, Lysithea and Elara.
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