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 |
|---|---|
| Satellite |
Any body in orbit around a larger parent body. Most planets in the solar system have natural satellites, otherwise known as moons. Artificial satellites are man-made objects launched into orbit around the Earth, or another moon or planet.
|