The discovery of an exomoon could be years away, but researchers are already theorizing the conditions under which liquid water might be found on their surfaces.

By Elizabeth Howell www.seeker.com 3-27-17

As some scientists search for habitable planets outside our solar system, other researchers are tackling a similar question for the moons of these planets. So-called exomoons have yet to be found outside our solar system, and a detection could be a decade away – or more.

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