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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| Hadley Rille |
A sinuous channel on the Moon, running across Palus Putredinis. It is close to the landing site of the Apollo 15 mission and is believed to be a collapsed lava tube.
See also: Apollo programme, rille.
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