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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| Grus The Crane |
A small southern constellation, introduced probably by sixteenth-century navigators and included by Johann Bayer in his atlas Uranometria, published in 1603. It contains four stars brighter than fourth magnitude. Delta Gruis δ Gru is a double star that can be split by the unaided eye.
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