Earth's own moon, a beautiful but stark, dead world shaped by ancient volcanoes and countless impact craters, is undoubtedly the most familiar, but it's far from being the most interesting.

The International Astronomical Union (IAU) officially recognizes 288 planetary moons orbiting the solar system's eight worlds, according to NASA.But there are also a further 473 "small-body ...

Moons are natural satellites that rotate around planets or asteroids. They come in many shapes, sizes and types. Larger moons are spherical, but others can have an irregular shape or ...

The solar system has many more moons than the one we can see in the sky. ... Planetary moons . Starting closest to the sun, our home star's nearest neighbors, Mercury and Venus, ...

Jupiter already reigns as king of the planets — it's the largest one in our solar system. And now, the gas giant has the most known moons, too.Astronomers have observed 12 additional moons ...

Jupiter already reigns as king of the planets — it's the largest one in our solar system. And now, the gas giant has the most known moons, too.Astronomers have observed 12 additional moons ...

Meet the surprising, oddball worlds moving around our solar system. From meteorites that impact Earth, to a moon that orbits backwards, to an imposter lurking in the asteroid belt, a variety of ...

Like all moons in the outer solar system, it's mostly made of water ice, but its surface is unusually dark. When Cassini flew past it measured its density to be 55% that of water — its interior ...