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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| Harmonice Mundi The Harmony Of The Worl |
A book by Johannes Kepler 1571-1630 published in 1619. It included the third of Kepler’s laws of planetary motion. Kepler himself believed his greatest achievement was the discovery of musical harmonies for the planets reflecting the divine harmony of the universe, and named the work accordingly.
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