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.
NASA's Mars Reconnaissance Orbiter (MRO) has found evidence that McLaughlin Crater once contained a lake fed by flowing groundwater.
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'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 Reconnaissance Orbiter (MRO) has helped solve two forty-year-old mysteries and delivered new information about climate change on Mars.
NASA's Phoenix Mars Lander - which landed two years ago today - will not be rising from the ashes.