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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| New Style Date |
The system of date determination currently in use, introduced on 14 September 1752 in Britain and its American colonies when they adopted the Gregorian calendar. The eleven days 3-13 September 1752 were eliminated and the day on which the count of years changes was moved from 25 March to 1 January. Dates according to the Julian calendar in use previously are known as Old Style Dates.
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