Hints of a volcanically active exo-moon

A rocky extrasolar moon (exomoon) with bubbling lava may orbit a planet 550 light-years away from us. This is suggested by an international team of researchers on the basis of theoretical predictions matching observations. The 'exo-Io' would appear to be an extreme version of Jupiter's moon Io.

from Latest Science News -- ScienceDaily https://ift.tt/2ZzdY2L

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