Season 25 Episodes13
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Neptune, the outermost of the giant planets, has been known for well over a century, but our knowledge of it is still meagre. With its gaseous surface, its quick rotation and its large satellite, Triton, it is of tremendous interest. Patrick Moore and Dr
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"Neptune - the Mysterious Giant" is episode 6 of The Sky at Night season 25. It aired on May 31, 1981.