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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| Little Green Men |
A name given by Jocelyn Bell Burnell to the first four pulsars discovered before their nature as rotating neutron stars was known.
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