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 |
|---|---|
| Mass-Luminosity Relation |
The simple relation between the mass M and luminosity L of a star on the main sequence that takes the form L ~ Mn where the index n has the value 3.5 for stars of 7 solar masses or less. For stars with masses in the range 7 to 25 solar masses, n falls to 3.0 and is nearer 2.7 for masses in excess of 25 times the Sun’s.
|