NASA's next big space project is about to hit its apex.
Debate over the origin of large-scale polygons on Mars continues even after several decades of detailed observations - as similarity in geometric patterns on the red planet and Earth have long sparked the imagination.
NASA has released a panoramic image depicting the ruddy terrain around the outcrop where the space agency's Opportunity rover spent its most recent Martian winter.
If there's any evidence of ancient life on Mars, it's likely to be found near the surface, new research suggests - dramatically upping the chances that it'll be discovered by the Curiosity rover, set to land next month.
Parts of Mars appear to have been modified by liquid water comparatively recently, indicating that there may have been favorable conditions for life.
There's vastly more water in Mars's mantle than previously thought - as much as on Earth, in fact - dramatically raising the chances that the planet might once have sustained life.
Clouds of snow blanket the Red Planet's poles during the dead of a Martian winter. However, unlike Earth's water-based snow, the particles on Mars are actually frozen crystals of carbon dioxide.
NASA has decided its precision landing gear is accurate enough to let it land the Curiosity Mars rover a lot closer to its target than expected.
Scientists have discovered new types of organism living in one of the most inhospitable soils in the world - raising hopes that something similar could survive on Mars.
Disappointingly, scientists say they've been able to establish where the methane on Mars comes from - and it's not from living organisms.
New, NASA-funded research indicates that very large molecules containing carbon - a key ingredient for the building blocks of life - have originated on Mars.
NASA's Mars Exploration Rover Opportunity recently used a low sun angle to snap a memorable view of a large Martian crater.
NASA recently tested a Mars rover in California's Mojave Desert to prepare for the August landing of its Curiosity rover on the red planet.
NASA's Mars Reconnaissance Orbiter (MRO) has revealed that sand dunes on Mars can put on a surprising turn of speed.
Astronauts signing up for long-term future missions to Mars and beyond will inevitably face a wide range of health issues, including microgravity-induced lymphocyte programmed cell death.
Lava flows coiled like snail shells have been found for the first time on Mars - and they're bigger than anything similar on Earth.
The best place to look for life on Mars and other planets could be the impact craters of asteroids.
NASA's Mars Program Planning Group (MPPG) is starting to research its next Mars mission and is looking for help from scientists and engineers worldwide.
Scientists believe they've found evidence for life on Mars - in data collected 36 years ago.
ESA’s Mars Express has discovered a series of 'pit-chains' in the Tharsis region of Mars that could, says ESA, be tempting targets in the search for microbial life.