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 |
|---|---|
| Jeans Criterion |
An idealized set of initial conditions for the steady contraction under gravity of a density perturbation in an interstellar cloud.
|