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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| Diffraction |
The spreading of a beam of light as it passes by the edge of an obstacle, into what geometrically would be the shadow. When diffraction occurs, interference between different parts of the light beam results in a pattern of light and dark areas called a diffraction pattern.
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