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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| Phoebe |
The outermost satellite of Saturn, discovered by W. Pickering in 1898. Phoebe appears to be spherical, 220 kilometres in diameter, and of very dark material that reflects less than 5 per cent of incident light.
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