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 |
|---|---|
| Cassegrain |
An adjective used to describe any type of optical, radio or other telescope design which incorporates the use of a central hole in the primary reflecting element.
See also: Cassegrain telescope.
|