If you look up on a clear night, the brightest and largest object in the sky will probably be the moon. And unless you have a decent telescope, it is the only natural satellite you can see with your ...

The solar system is a grand cosmic stage where each planet and moon plays a unique role in a story billions of years in the making. From Mercury’s shrinking surface and Venus’s runaway greenhouse ...

For researchers at the University of Idaho, spotting a moon 6 miles wide orbiting Uranus, a staggering 1.8 billion miles from ...

From Jupiter's swirling storms to Neptune's icy depths, planets across our solar system are orbited by a fascinating cast of moons. Some are massive and geologically active, while others are tiny, ...

From tentative evidence of habitable planets to the eyebrow-raising suggestion an interstellar comet might not be what it ...