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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| Absolute Zero |
The point at which all molecular motion ceases and so, theoretically, the lowest possible temperature. It is the zero point of the Kelvin temperature scale used in science. The equivalent on the Celsius scale is -273.16°C.
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