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Could Hubble have spotted the first known exomoon?

The first suspected exomoon is coming into focus. Observations with the Hubble Space Telescope bolster the case for a Neptune-sized moon orbiting a gas exoplanet 8,000 light-years away, astronomers report October 3 in Science Advances. The moon’s existence, if confirmed, would challenge theories of how satellites are born.

Astronomers David Kipping and Alex Teachey of Columbia University trained Hubble on the star Kepler 1625 for 40 hours on October 28 and 29, 2017. The star was known to have a Jupiter-sized planet orbiting it every 287 days, thanks to observations by the Kepler space telescope, which detects dips in starlight that indicate a planet is transiting in front of the star.

See link,
https://www.sciencenews.org/article/hubble-may-have-spotted-first-known-exomoon

11 day(s) ago

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Kravenhead
It kind of sounds like it. And it appears to be a weird one if it does exist.
Apparently it's size isn't consistent with our current moon formation theories.

They want to observe it again in 2019 to try to confirm it is a moon.

Finding moons is pretty cool, though. It increases the possibilities of extraterrestrial life.
Common sense tells us they exist, but it's good to get our speculations verified.

Posted 11 day(s) ago

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