The Sky at Night - The Forgotten Solar System

The Sky at Night - The Forgotten Solar System: Of the 100 probes that have been sent out into space, only one probe - Voyager 2 in 1989 - has ever sent back any information about the solar system's outer planets. From afar, they seem featureless and devoid of any significant geological activity.
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https://hdclump.com/size-matters-episode-2/
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