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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| Virgo A |
The strongest radio source in the constellation Virgo, identified with the giant elliptical galaxy M87, which dominates the Virgo Cluster. The radio emission is associated with a jet 4,000 light years in extent and may well be caused by the accretion of matter on to a supermassive black hole in the nucleus of M87.
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