Data from NASA's Curiosity rover is helping to explain how Mars may have lost much of its original atmosphere, leaving it with 100 times less than Earth.
NASA's Curiosity rover has finished its first set of tests on the soil sample it scooped up earlier this month and discovered it's a lot like the volcanic soils of Hawaii.
University of Arkansas researchers have come up with an explanation of how water on Mars could produce the flow patterns observed by NASA's Mars Reconnaissance Orbiter.
NASA's Mars rover Curiosity has chomped up its first solid sample, taking it into its Chemistry and Mineralogy (CheMin) instrument for analysis.
A meteorite that landed in the Moroccan desert 14 months ago has been traced back to Mars.
The first rock to be touched by NASA's Curiosity rover - dubbed Jake Matijevic - turns out to have a very Earth-like composition, different to anything before seen on Mars.
Astronauts venturing beyond the safety of the International Space Station (ISS) will face increased exposure to cosmic radiation.
NASA's Mars Curiosity rover has successfully collected and sampled a scoopful of sand and powdery material at the "Rocknest" site on the Red Planet.
The high-resolution stereo camera on the European Space Agency’s (ESA) Mars Express has captured a series of breathtaking images depicting a region within the 1800 km-wide and 5 km-deep Argyre basin.
Since the beginning of August, NASA's Mars Curiosity rover has been exploring the Red Planet and learning as much as it can about the terrain.
Preliminary weather reports from the Curiosity rover’s Remote Environment Monitoring Station (REMS) are showing some surprisingly mild temperatures during the day.
The robotic arm of NASA’s Curiosity rover recently made contact with a Martian rock for the first time - analyzing the chemical elements inside of a rock dubbed "Jake Matijevic" by scientists.
NASA's stalwart Opportunity rover has captured an image of the Martian surface that is puzzling scientists.
NASA’s Mars Curiosity rover has completed the delicate calibration of a robotic arm as it awaits further instructions in Gale Crater near the Martian equator.
NASA's Mars Reconnaissance Orbiter (MRO) has returned the first definitive evidence of carbon dioxide snowfalls on Mars - the only place this is known to happen anywhere in our solar system.
NASA's Mars Curiosity rover recently concluded a series of preparatory tests designed to calibrate precision movements by the rover's robotic arm which is used to deploy a wide variety of tools.
One of the most encouraging signs for those searching for evidence of early water on Mars has been the existence of clays. But a French-US team has now rained on that particular parade.
Scientists studying data from ESA's Mars Express spacecraft say they may have spotted signs of water on the planet's surface.
NASA's Curiosity Mars rover is taking a break from driving to prepare for full use of the tools on its arm.
Dutch company Mars-One says it's won enough sponsorship money to create a reality TV show which it hopes will in turn fund a manned trip to Mars.