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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| Alpine Valley Vallis Alpes |
A flat-bottomed valley, 150 kilometres 95 miles long, crossing the lunar Alps and connecting the Mare Frigoris with the Mare Imbrium.
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