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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| Scintillation Counter |
A radiation detector used in astronomy to detect gamma rays. The device uses crystals that emit flashes of light when gamma-ray photons strike them. Each flash, or scintillation, is picked up by a photomultiplier, the signal from which is then a measure of the flux of gamma rays on the counter.
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