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Exomoon Candidate around Jupiter-Sized Exoplanet Kepler-1708b 5nvklj





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Exomoon Candidate around Jupiter-Sized Exoplanet Kepler-1708b

Dragon
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Post by Dragon Sat Jan 15, 2022 3:08 am

In their hunt for elusive exomoon candidates, astronomers have looked at 70 cool gas giants found by NASA’s Kepler space telescope.

They’ve found only one signal that could indicate an exomoon, about 2.6 times larger than Earth, orbiting a Jupiter-sized exoplanet called Kepler-1708b.

Named Kepler-1708b-i, it joins Kepler-1625b-i as another example of an unexpectedly large exomoon candidate — echoing the surprise that hot-Jupiter discoveries elicited in the mid-1990s.


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Exomoon Candidate around Jupiter-Sized Exoplanet Kepler-1708b 334pu7m
Dragon
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Post by Dragon Sat Jan 15, 2022 3:09 am

Exomoon Candidate around Jupiter-Sized Exoplanet Kepler-1708b Image_10462-Kepler-1708b-i
Image credit: Helena Valenzuela Widerström.

An artist’s impression of the gas giant Kepler-1708b, its moon Kepler-1708b-i, and their parent star.


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Exomoon Candidate around Jupiter-Sized Exoplanet Kepler-1708b 334pu7m
Dragon
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Post by Dragon Sat Jan 15, 2022 3:10 am



The Hubble and Kepler space telescopes found evidence for what could be a giant moon accompanying a gas-giant planet that orbits the star Kepler-1625, located 8,000 light-years away in the constellation Cygnus.

The moon may be as big as Neptune and it orbits a planet several times more massive than Jupiter.


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Exomoon Candidate around Jupiter-Sized Exoplanet Kepler-1708b 334pu7m

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