Cosmic radiation puts astronauts at risk of Alzheimer's

Even with shielding, the amount of cosmic radiation involved in a trip to Mars could put astronauts on the path to Alzheimer's disease.

Curiosity rover shoots new self-portrait

NASA's released a new, stunning self-portrait of the Curiosity Mars rover, stitched together from dozens of high-resolution images.

New Curiosity Rover badge on Foursquare

You can now check-in to earn the Mars Curiosity Rover badge on the social networking site, Foursquare.

Mars Curiosity Rover explores Yellowknife Bay

NASA’s Mars Curiosity Rover is looking for new rocks to drill in area known as Yellowknife Bay on the Red Planet.

Clays - signs of water - are 'widespread' on Mars

Clay minerals - rocks that usually form when water is present for long periods of time - cover much more of Mars than previously thought, say Georgia Institute of Technology scientists.

NASA to send another rover to Mars

NASA is making ambitious plans to land a second rover on Mars in 2020 and send astronauts there in the 2030s.

Mars rover finds organic compounds

NASA's confirmed rumors that the Curiosity rover has found organic compounds on Mars - but says they're probably not a sign of life, and likely came from Earth.

Has Curiosity found complex organics on Mars?

Space nuts may get an early Christmas present this year: rumors are flying that NASA is preparing to announce the discovery of organic molecules on Mars - a possible sign of life.

Mars got its water from the same place as Earth

A study of water from the Martian interior shows that Mars was originally formed from similar building blocks to Earth, but evolved differently later on.

Curiosity delivers Martian weather report

NASA's Curiosity rover has been gathering a wealth of information about  winds and natural radiation on Mars, spotting whirlwinds and changes in air pressure.

Warm Martian water could have harbored microbes

Not only was there once water on Mars - some of it was warm enough to support life, an analysis of meteorites shows.

Rover examines changes in Martian atmosphere

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.

Martian soil is similar to Hawaii's

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.

Model shows how water could flow on Mars

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.

Rover takes first taste of dirt

NASA's Mars rover Curiosity has chomped up its first solid sample, taking it into its Chemistry and Mineralogy (CheMin) instrument for analysis.

Martian meteorite delivers evidence of water

A meteorite that landed in the Moroccan desert 14 months ago has been traced back to Mars.

Curiosity identifies Earth-like rock - and has its first carwash

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.

Protecting astronauts beyond the ISS

Astronauts venturing beyond the safety of the International Space Station (ISS) will face increased exposure to cosmic radiation.

Video: Curiosity samples Martian soil at Rocknest

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 ice-coated beauty of Mars’ Silver Island

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.