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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| Light Echo |
A reflection of the burst of light from a supernova or a nova by neighbouring interstellar clouds, resulting in a ring of light surrounding the supernova or nova. The ring of light is seen to expand over time.
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