Our Moon is hostile to life. But this doesn’t mean that moons elsewhere in the universe are inhospitable to life. Far away from the solar system, moons of free-floating planets can keep water in ...

At a young age, we're told how the sun warms Earth and makes life possible. That idea sticks with most of us for life. But when we want to understand things more thoroughly and we dig more deeply, we ...

Far from the Sun’s heat, orbiting the outer planets of the solar system, are moons with oceans of liquid water beneath their frozen surfaces. Keith Cooper finds out how planetary scientists are ...

Several small worlds beyond Jupiter are not just frozen rubble. Beneath their shining skins, many hide oceans of liquid water. New research says those seas do not always stay calm. When the ice lids ...

Planets are the headliners for February's celestial show. Shortly after sunset, most of the planets of our solar system will be visible in the night sky, including Mercury, which is usually difficult ...

Even at a glance, the planets in our solar system are wildly diverse. Huge and small, airless and densely packed with ...