NASA has created a 3D reconstruction of ancient water channels below the surface of Mars, revealing evidence of a catastrophic flood in the last 500 million years.
A recently-discovered comet has a chance - albeit a small one - of hitting Mars in October next year.
The Curiosity ground team has been forced to switch the Mars rover to a redundant onboard computer, thanks to a memory problem.
The world's first space tourist, Dennis Tito, has announced plans for a manned fly-by of Mars - crewed, he suggests, by a married couple.
NASA's Curiosity rover has successfully extracted a sample from a Martian rock - the first ever to be collected from a planet beyond Earth.
The European Space Agency's (ESA) Mars Express recently snapped a high-resolution stereo image of the southeast corner of the Amenthes Planum region on Mars, near the Palos crater and the mouth of a well-known sinuous valley, Tinto Vallis.
NASA's Curiosity rover has, for the first time, used the drill on its robotic arm to bore into a rock on Mars and extract a sample for analysis.
Ridges in impact craters on Mars appear to be the fossilized remnants of underground cracks through which water once flowed.
An international team of researchers studying data beamed back by NASA's Mars Reconnaissance Orbiter have observed seasonal changes on far-northern sand dunes on the Red Planet caused by warming of a winter blanket of frozen carbon dioxide.
NASA's Mars Reconnaissance Orbiter (MRO) has found evidence that McLaughlin Crater once contained a lake fed by flowing groundwater.
The European Space Agency's (ESA) Mars Express has captured a detailed image of the upper part of the Reull Vallis region of Mars.
An international team of researchers from Los Alamos National Laboratory and the French Space Agency say they have managed to track a trail of minerals that point to the prior presence of water at the Curiosity rover site on Mars.
NASA's Mars rover Curiosity is on the road again, driving toward a flat rock with pale veins that the team says could help shed light on Mars' watery past.
Researchers at the Centre of Astrobiology have positively identified microorganisms living inside salt deposits in the acidic and ferrous environment of the Tinto River in Huelva, Spain.
The private space company Mars One has issued the requirements for its astronaut selection program, a mission that seeks to establish the first human population on Mars in 2023.
NASA scientists are currently researching ways of safely sending astronauts to Mars using advanced nuclear rockets.
Another crucial instrument on the Curiosity Mars rover has had its first test: the Dust Removal Tool, used to sweep dust from the rover's target rocks.
The data's in from the simulated Mars mission in which six trained astronauts were shut up for a year and a half. And it seems that long-term missions of this kind do indeed lead to problems for the crew.
A meteorite found in the Moroccan desert in 2011 appears to have originated in Mars' crust - and contains much more water than any Martian meteorite ever found before.
Rolling robots like spiky tumbleweeds could be used to explore the moons of Mars, says a team of NASA, Stanford and MIT engineers.