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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| International Sun-Earth Explorer Isee |
Name of three spacecraft built by NASA and ESA to study the influence of the Sun on the Earth’s space environment and magnetosphere. ISEE-1 and 2 were launched in 1977. ISEE-3, launched in 1978, later became the International Cometary Explorer ICE.
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