Uranus
Our solar system may have had a fifth 'Giant' planet
According to a new study, our system was once home to a fifth gas giant that suddenly vanished some 4 billion years ago after a run-in with Neptune.
August 17, 2015
Our solar system may have had a fifth 'Giant' planet
According to a new study, our system was once home to a fifth gas giant that suddenly vanished some 4 billion years ago after a run-in with Neptune.
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