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.
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| Gaspra |
Asteroid 951, a member of the Flora group, imaged by the Galileo spacecraft, which passed Gaspra at a distance of about 16,000 kilometres on 29 October 1991. It is irregular in shape, measuring about 20 by 12 by 11 kilometres, with a cratered surface. The largest crater is 1.5 kilometres across. Galileo detected a magnetic field, suggesting that Gaspra has a metallic composition.
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