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 |
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| Mass Function |
For a group of related objects, such as a cluster of stars or galaxies, a graph or mathematical expression describing the relative numbers of objects found in different ranges of mass.
See also: initial mass function, Salpeter function.
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