KELT-11b was considered to be one of the largest objects known, and it’s about 40 percent wider than Jupiter.  A team of astronomers find an exomoon. It was the first of its kind to be discovered. Exomoons are satellites orbiting a planet around another star. What makes this find interesting is the scale of the planet-moon system, although “moon” is quite a loose term as the object is reputedly around the size of Neptune, and the planet it is orbiting is ten times the mass of Jupiter or 3,000 times that of Earth.
This changes the way we categorize systems and invites questions on how big can …

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