Moons orbiting free-floating planets, planets drifting through space without a parent star, might seem like unlikely candidates for life. However, a new study published in the Monthly Notices of the ...

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 ...

The White House wants a nuclear reactor ready for launch to the moon by 2030. Reliable lunar power is the linchpin in NASA’s plans for a “golden age” of space discovery — fueling a habitable moon base ...