But our moon is just one of 421 moons in our solar system, and it carves out a lonely figure. Our moon orbits our planet ...

A rare 'smiley face' triple conjunction is coming to Earth's morning skies on April 25, when Venus, Saturn and the crescent ...

The spacecraft has found extensive ridges along the planet's surface ... States with contributions from 16 other nations. Zipping around Saturn and its moons since 2004, Cassini has detected ...

The canonical example is of course our own moon, a decently big chunk of rock that orbits Earth. But centuries ago the first telescopic observations of other planets revealed that many have moons ...

Mars has two small, potato-shaped moons, called Phobos ... from the surface. Many other missions, both past and present, have revealed amazing insights about the planet's history, and future ...

Over 4.6 billion years ago, Earth took shape from a spinning cloud of dust and gas surrounding the young sun. Tiny particles ...

Jupiter: Spot Jupiter in the evening sky with a telescope, although with the sun setting later, it'll become more difficult to see. It'll be about 24 degrees above the horizon by April 30, setting ...

April's full moon, a micromoon, will be on April 12. The Lyrid meteor shower is expected to peak April 21-22 A crescent moon combines with Venus and Saturn for a "smiley face" in the sky on April 25.