Our Moon could escape Earth’s orbit and become a "ploonet"
Our Moon might not always be the dedicated companion to Earth that it is now. An international team of researchers has proposed a hypothetical new type of world it calls a “ploonet”: a former moon that escaped its host planet’s orbit and began circling its host star instead. The team thinks ploonets could explain several unusual astronomical phenomena — and that our own Moon could one day join their ranks.
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