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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| Nautical Almanac |
An abbreviated form of Nautical Almanac and Astronomical Ephemeris, the name prior to 1960 of the main annual compilation of astronomical data published by the UK’s Nautical Almanac Office. This subsequently became the Astronomical Ephemeris and more recently the Astronomical Almanac. The current Nautical Almanac contains abridged data suitable for navigation purposes.
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