Theia, who brought the water to Earth and ... our Moon

Where does the water on Earth come from? How was our Moon formed? And is there one single event that had led to the formation of both? 

New images of Europa show 'chaos terrain' in crisp detail

The surface of Jupiter's moon Europa features a widely varied landscape, including ridges, bands, small rounded domes and disrupted spaces that geologists call "chaos terrain."

NASA's possible planetary missions

NASA has selected four possible planetary science missions for further evaluation, two focused on Venus, one on Jupiter's volcanic moon Io and one on Neptune's icy moon Triton. Final selections will be made next year.

Astronomers create first global map of Saturn's moon Titan

A team of astronomers has created the first global map of Titan by using the Cassini probe's over 100 fly-bys to stitch together both imagery and radar measurements. 

The Raw Materials for Life Were Found on Enceladus

A team of German scientists recently examined data gathered by the Cassini orbiter around Enceladus’ southern polar region and found was evidence of organic signatures that could be the building blocks for amino acids.

Moon-forming disk discovered around distant planet

Using Earth's most powerful array of radio telescopes, astronomers have made the first observations of a circumplanetary disk of gas and dust like the one that is believed to have birthed the moons of Jupiter.

Mass anomaly detected under the moon's largest crater

A mysterious large mass of material has been discovered beneath the largest crater in our solar system - the Moon's South Pole - Aitken basin and may contain metal from the asteroid that crashed into the Moon and formed the crater.

Mars Odyssey Reveals Phobos Using THEMIS

NASA’s aging 2001 Mars Odyssey orbiter recently snapped some unique views of the twin moons Phobos and Deimos.

Meet Neptune's new moon, Hippocamp

Neptune has a new moon, and it’s also the gas giant’s smallest to date — only a little over 20 miles across. It was discovered using the Hubble Space Telescope combined with a new method to track dim objects as they orbit.

Saturn's largest moon may hold key to cleaner engines

Researchers determined hydrocarbons can form the type of complex chains that create Titan's orange-brown haze layers at temperatures as low as 330 degrees below freezing on Earth.

Icy warning for space missions to Jupiter's moon

Scientists suggest fields of 15 metre-high shards of ice could exist on Europa's surface, posing a threat to future landing missions.

Ice confirmed at the moon's poles

Using data from NASA's Moon Mineralogy Mapper instrument, scientists have identified three specific signatures that definitively prove there is water ice at the surface of the Moon.

Dazzling Views Show Saturn Moon Titan Like Never Before

The mysterious surface of Saturn's huge moon Titan comes into gloriously sharp focus in newly released photos captured by NASA's Cassini spacecraft.

Jupiter's Moons: 12 More Found, 79 Known

Over the past 18 months, astronomers have painstakingly tracked a dozen tiny moons that they found circling the giant planet Jupiter.

Europa or Enceladus to be searched for signs of life

In its quest to find extant life in the Solar System, NASA has focused its gaze on the Jovian moon Europa. But scientists believe it is Enceladus that stands the greatest chance of making that next big step.