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 |
|---|---|
| North Polar Distance Npd |
The angular distance on the celestial sphere between an object and the north celestial pole, measured along a great circle.
|