Oxygen isotope analysis of lunar soil shows meteorites delivered only a limited amount of water to the Earth–Moon system ...

Mars is orbited by two small, irregular moons named Phobos and Deimos—named after the mythological sons of Ares representing fear and terror. Unlike Earth’s large Moon, these tiny worlds look more ...

On 12 August 2026, a total solar eclipse will be visible from Greenland, Iceland and northern Spain, making it the first to pass over mainland Europe since 1999. Our stories cover all you need to know ...

Keen astronomers will be in for a treat tonight as a rare 'planetary parade' of six planets lights up the night sky.

While aliens in science fiction hop between planets on vast spaceships, scientists say real-life extraterrestrials might take a far less glamorous means of transport.

Moons may seem like quiet companions to the planets, but many of them are worlds every bit as fascinating as the planets themselves. Some are covered in oceans, some erupt with lava, and others hide ...

Mars' moons are easily visible at night from the surface of the Red Planet. Phobos – the nearer, larger, and brighter of the two – would be obviously non-round. A sharp-eyed observer would be able to ...

A new study hints that Saturn's largest moon, Titan, was created around 400 million years ago, when two massive moons smashed into each other. This hypothesis could also help to solve several other ...

A study led by SETI Institute scientist Matija Ćuk proposes that Saturn’s bright rings and its largest moon, Titan, may have both originated in collisions among its moons. This study was accepted for ...

February 11, 2026, Mountain View, CA – Recent research suggests that Saturn’s bright rings and its largest moon, Titan, may have both originated in collisions among its moons. While Cassini’s 13-year ...

On January 29, 1989, a Soviet space probe named Phobos 2 arrived in orbit around Mars. This was the last space mission launched by the Soviet Union. Its primary purpose was to study Mars' two moons, ...

Saturn’s four brightest moons are lined up for ideal viewing this evening. You can catch the ringed planet for a few hours after sunset, as it slowly sinks toward the western horizon. Around 7 P.M.