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 |
|---|---|
| Separation Sep. |
The angular distance between two stars in a visual binary star system, measured in arc seconds. It is one of two standard measurements used to record the relative positions of the members of a binary system, the other being the position angle.
|