But those elusive exomoons—satellites orbiting planets outside our solar system—may be everywhere in the Milky Way. For instance: The solar system isn’t necessarily a template for the rest of the galaxy. If anywhere near true, that’s an exponential leap in the number of places where extraterrestrial life could launch. Both satellites might be an archetype for the galaxy—a large moon with a subsurface ocean, orbiting a large planet far from its star. There are very good chances they are all over the place.”When looking for moon life, size matters.

Source: Forbes September 09, 2018 15:56 UTC