Neptune Completes the First 'Year' Since Its Discovery

Science | 206543 hits | Jul 18 10:23 am | Posted by: DrCaleb

German astronomer Johann Galle discovered the planet on September 23, 1846. At the time, the discovery doubled the size of the known solar system. The planet is 2.8 billion miles (4.5 billion kilometers) from the Sun, 30 times farther than Earth. Under th

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