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 |
|---|---|
| Radiant |
The point on the celestial sphere from which the trails of meteors belonging to a particular meteor shower appear to radiate. Meteors entering the Earth’s atmosphere from a stream create trails that are almost parallel; the apparent divergence from a radiant is simply a perspective effect.
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