Name: Our Moon could escape Earth’s orbit and become a "ploonet"
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Our Moon could escape Earth’s orbit and become a "ploonet"

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Miss You Already7. 10. 19&nbsp;&nbsp;Miss You Already7. 10. 19&nbsp;&nbsp;Image by NASA/Victor TangermannOur Moon might not always be the dedicated companion to Earth that it is now.An international team of researchers has proposed a 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. are a class of exoplanets that orbit incredibly close to their host stars. However, some astronomers believe they may have actually formed on the outskirts of their solar systems and .In a yet-to-be-peer-reviewed published on the pre-print server arXiv, the researchers detail their simulations of what might happen if a hot Jupiter started that migration with an exomoon in tow.Based on their simulations, about 48 percent of the exomoons would detach from their hot Jupiters and begin orbiting their stars instead —&nbsp;as ploonets.The team believes ploonets could explain several unusual astronomical phenomenon.An icy moon's water could evaporate as it escapes its planet's orbit and moves toward its star, for example, giving the ploonet a comet-like tail. The passage of such a ploonet across its star might explain why appear to flicker.Meanwhile, a ploonet that eventually crashed into its former host could create debris that might explain the strange rings found around some exoplanets."Those structures [rings and flickers] have been discovered, have been observed," researcher Mario Sucerquia . "We just propose a natural mechanism to explain [them]."Ploonethood could also explain why astronomers have yet to definitively despite predictions that the universe should be rife with them — the moons may get kicked out of their planets' orbits before we can detect them. If we see the former moons after that point, we might just mistake them for new exoplanets.Based on the researchers' simulations, ploonets also have incredibly short lifespans, astronomically speaking — roughly 50 percent crash into their star or former host planet within half a million years, while others meet the same fate after less than a million years of ploonethood — which could further explain why we haven't found any.As for Earth's own Moon, Sucerquia told Science News that it "is a potential ploonet" given that it moves about 4 centimeters farther away from Earth every year. But we don't have to worry about it going its own way any time soon — at this rate, it won't break free from Earth's orbit for about 5 billion years.READ MORE: [Science News]More on the exomoons: Keep up.Subscribe to our daily newsletter to keep in touch with the subjects shaping our future.Copyright ©, Camden Media Inc All Rights Reserved. See our , . The material on this site may not be reproduced, distributed, transmitted, cached or otherwise used, except with prior written permission of Futurism. Fonts by Typekit and Monotype.

Miss You Already7. 10. 19&nbsp;&nbsp;Miss You Already7. 10. 19&nbsp;&nbsp;Image by NASA/Victor TangermannOur Moon might not always be the dedicated companion to Earth that it is now.An international team of researchers has proposed a 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. are a class of exoplanets that orbit incredibly close to their host stars. However, some astronomers believe they...

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Kristin Houser

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Our Moon could escape Earth’s orbit and become a "ploonet"

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