Measurements by the Hubble Space Telescope have revealed that Hydra and Nix, the second- and third-b...

Massive moons of exoplanets are the right size, in the right position and have sufficient water to s...

NASA's New Horizons spacecraft has for the first time photographed Kerberos and Styx - the smallest ...

NASA is developing a 'robotic eel' that could explore the icy water of Jupiter's moon Europa and pow...

The Japan Aerospace Exploration Agency (JAXA) has unveiled the plan for a Moon lander to a council o...

NASA's Cassini spacecraft has returned to equatorial orbits around Saturn after nearly two years, al...

The Martian rover has become the first human-made vehicle to complete a marathon by crossing the 42-...

Ground-penetrating radar measurements taken by China's first lunar rover Yutu, also known as Jade Ra...

Jupiter's largest moon, Ganymede, definitely has an underground ocean, researchers said after confir...