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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| M Star |
A star of spectral type M. M stars have surface temperatures in the range 2,400-3,480 K and are red in colour. Molecular bands are prominent in their spectra, particularly those of titanium oxide TiO. Examples of M-type stars include the nearest star, Proxima Centauri, which is a dwarf, and the supergiant Antares.
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