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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| Titania |
The largest satellite of Uranus, discovered by William Herschel in 1787. The flyby of Voyager 2 in 1986 showed Titania to be peppered with numerous craters, though there are regions where the crater density is lower. This suggests that activity resulting in changes to the surface has taken place in the past. In addition, the surface is scarred by a large number of valleys and fractures, some of which cut large craters in half.
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