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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| Maunder Minimum |
An interval of about 70 years, starting around 1645, during which solar activity was consistently at a low level and sunspots were rare. For 37 years no aurora was recorded.
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