Exomoons could have ‘moon-moons,’ and they might support alien life – CNET

Astronomers think they may have found the first moon circling a planet beyond our solar system. Now one researcher is looking at what the weather might be like on a moon orbiting that moon.

Astronomers think they may have found the first moon circling a planet beyond our solar system. Now one researcher is looking at what the weather might be like on a moon orbiting that moon.