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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| Algieba Gamma Leonis; γ Leo |
A visual binary star consisting of two yellow giants, separated by 4 arc seconds. The magnitudes are 2.3 and 3.5, and they orbit around each other in a period of 620 years.
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