The discovery of the first potential exomoon has astronomers scratching their heads. It’s the size of Neptune, and its planet is the same size as Jupiter but ten times the mass. It’s also made of gas. Simply put: it’s unlike any moon we’ve ever seen before.
Astronomers David Kipping and Alex Teachey published evidencefor the moon in the journal Science Advances. Although while some have called this the first ever discovery of an exomoon, it is not that clear-cut.
It is, however, looking like the most probable explanation for the data that has been collected so far. And if it does turn out to be an exomoon, this would be a huge step for astronomy, and the hunt for alien life.
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Abigail Beall 