So far, humanity has yet to find its first "exomoon"—a moon orbiting a planet outside of the solar system. But that hasn't been for lack of trying. According to a new paper by Thomas Winterhalder of ...

Nov. 7 (UPI) --Saturn's Enceladus moon might be capable of supporting life, according to data collected by NASA's Cassini mission and compiled in a new study in the Science Advances journal. The moon ...

Moons drifting through the pitch-black void between stars — orbiting rogue planets with no sun — could sustain liquid water and conditions friendly to life for more than four billion years, according ...

IF OUR solar system holds so many remarkable moons, then what strange satellite worlds might we find among the billions of planetary systems in the Milky Way? Perhaps there are temperate, habitable ...

THE galaxy could be stuffed with large moons that orbit alien worlds, according to an analysis of data from NASA’s Kepler space telescope. Such moons are thought to be the most likely places to find ...

There is a category of planet that belongs to no star. It was thrown clear of its solar system early in the chaos of planetary formation, sent drifting into the galaxy's cold interior with no sun to ...

CAPE CANAVERAL, Fla. (AP) — Scientists have uncovered new types of organics in icy geysers spouting from Saturn’s moon Enceladus, bolstering the likelihood that the ocean world may harbor conditions ...