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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| Daylight Saving Time |
An adjustment to the normal civil time, introduced in some countries as a matter of convenience, for part or all of the year. One of the chief reasons for the adjustment is to arrange for the habitual working day to occur as far as possible during the hours of daylight, hence its name.
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