Ganymede's Bizarre Bulge Baffles Scientists

There's a strange bulge on the Solar System's largest moon, one that measures 375 miles wide and nearly two miles tall. Scientists aren't entirely sure why it's there or what caused it, but it may have something to do with the Jovian moon's subsurface ocean. » 3/27/15 9:20am Friday 9:20am

This Curiosity Image Suggests Microbial Life Once Existed On Mars

It may not look like much — just an old rock with dust on it. But after careful examination of this and other images taken of the Martian surface, a geobiologist is now claiming that these distinctive surface features could have only come from one source: microbes. » 1/06/15 9:00am 1/06/15 9:00am

Ancient Mars May Have Been More Habitable Than We Thought

Data collected by the Curiosity Rover suggests Mars once featured a moderate climate capable of fostering lakes of liquid water and even a vast sea, and that this climate could have extended to many parts of the Red Planet. » 12/09/14 9:00am 12/09/14 9:00am

Does Saturn's 'Death Star' Moon Harbor A Hidden Ocean?

It's not the prettiest thing in the solar system, nor is it the most interesting. But Mimas — a pockmarked moon in orbit around Saturn — does exhibit a rather strange wobble. A team of astronomers say there can only be one of two explanations: either it's harbouring a subterranean ocean or it has an irregularly shaped… » 10/17/14 10:20am 10/17/14 10:20am

Titan's Enigmatic "Magic Island" Continues To Baffle Scientists

Remember that bizarre "magic island" on Titan's northern seas? The one that suddenly emerged and then inexplicably disappeared? Well, it's baaa-aaack — and it's changed. » 9/30/14 10:40am 9/30/14 10:40am

Curiosity Finds A Weird "Ball" On Mars

If there's one thing to be said for Curiosity's mission on Mars so far, it certainly hasn't been boring. From supposed Martian squirrels to strange flashes of light on the surface, the rover has kept us entertained. And now there's this rather odd... ball. » 9/25/14 6:20am 9/25/14 6:20am

Evidence For Icy Plate Tectonics Found On Europa

A recent geological survey of Europa revealed that a massive 20,000 square-kilometer portion of the surface was missing. To explain it, a research team is now proposing that Europa's ice shell has a brittle, mobile, plate-like system above convecting warmer ice. » 9/08/14 7:30am 9/08/14 7:30am

Weird Microscopic Structure Found In Martian Meteorite

Scientists have found a strange structure resembling a microbial cell inside a Martian meteorite, but they're not claiming that it's evidence of Red Planet life. » 8/26/14 9:15am 8/26/14 9:15am

Oceans May Be Critical For Life To Arise In Habitable Zones

It's generally agreed that liquid water and a stable atmosphere are the minimal requirements for life. But new research shows that oceans play a vital role in stabilizing and moderating climates on Earth-like planets. » 7/23/14 9:30am 7/23/14 9:30am

Could This Lunar Cave Provide Shelter for a Future Moon Colony?

What you're looking at here is not an impact crater. It's a large hole on the Moon's surface that formed when the ground above a lava tube collapsed. NASA believes these pits widen underground and contain tunnels — which would be very handy for the first wave of lunar colonists. » 7/18/14 1:00pm 7/18/14 1:00pm

These Insanely Detailed Maps Of Mars Are The Most Accurate Yet

After 16 years of painstaking work, the U.S. Geological Survey has released a series of geologic maps that offer the most thorough representation of the Red Planet's surface to date. The revealing project will help mission planners target future areas for robotic — and potentially human — exploration. » 7/15/14 8:00am 7/15/14 8:00am

A Mysterious "Magic Island" Has Appeared On Titan

Saturn's largest moon has truly strange geography. Astronomers working on the Cassini mission recently observed the sudden appearance of a bright, mysterious object in one of Titan's northern seas — only to watch it disappear again. Uncertain as to what it is, the researchers offered four explanations. » 6/23/14 8:00am 6/23/14 8:00am

New Evidence Suggests Pluto Has An Ocean Beneath Its Surface

Astronomers believe that Pluto and its moon were the result of two massive objects slamming into each other. The resulting gravitational dynamic may have warmed the interior of Pluto, creating an ocean comprised of liquid water. Remarkably, this underground sea could still be there. » 4/15/14 11:00am 4/15/14 11:00am

Astronomers May Have Spotted Waves On Titan's Seas

Other than Earth, Titan is the only celestial object in the solar system capable of fostering stable liquids on the surface. But now, after years of searching, scientists may have detected waves rippling on its seas — which, if confirmed, would be the first discovery of its kind. » 3/18/14 6:40am 3/18/14 6:40am

Mercury is our solar system's incredible shrinking planet

The planet Mercury is our solar system's shrunken head. The scorched first rock from the sun has contracted into itself even more than previously thought — losing four miles (7 km) of elevation in some parts, according to new research using data from NASA's MESSENGER spacecraft. » 3/17/14 7:30am 3/17/14 7:30am

Uh, what the hell are these v-shaped formations doing on Mars?

These objects are startlingly reminiscent of Star Trek's Federation insignia — but they're geological features inside a large crater on Mars. It's a phenomenon, says NASA, that also explains why migratory birds fly in a v-shaped formation. » 2/19/14 4:40pm 2/19/14 4:40pm

Are these pictures of water flowing on Mars, right now?

Scientists at JPL say that new analysis of pictures taken on Mars contains the "strongest indication" that there is water flowing on the red planet, right now. » 2/10/14 7:00pm 2/10/14 7:00pm

Water Eruptions on Europa Mean that Conditions Are Ripe for Life

Jupiter's moon Europa is covered in a thick layer of ice, but it has a turbulent ocean that lies beneath. Today astronomers announced that new observations show this water is erupting in massive plumes like water volcanoes. It's a discovery that could have serious implications for Europa's potential to harbor life. » 12/12/13 8:00am 12/12/13 8:00am

What a Habitable Planet Twice the Size of Earth Would Be Like

To date, astronomers have catalogued over 1,000 exoplanets — some of them rocky and parked within their host star's habitable zone. But a good portion of these planets are bigger than Earth, prompting us to ask: What would it actually be like on a habitable planet twice the size of ours? » 12/04/13 8:40am 12/04/13 8:40am