New analysis of data from the European Space Agency's Mars Express orbiter strengthens the case for salty lakes underneath Mars's south polar cap.
Independent methane detections in the Martian atmosphere by the Curiosity rover and Mars Express orbiter add confusion to a convoluted story.
Electrostatic discharge in a simulated dusty Martian environment yields perchlorates — a potential energy source for microbial life — at abundances 1,000 times greater than sunlight alone.
In astronomy news this week: Dust storms are seen blowing around Titan for the first time, and new clues from old data suggest that an impact on Mars gave birth to Phobos.
With opposition only weeks away, will the current global dust storm finally break? We look at the prospects.
July's a busy month for skywatching. Not only are five bright planets in view, but three comets and a newly-discovered nova are also observable. And it all starts with a bang on Independence Day.
Scientists have discovered that a supervolcano likely created a mysterious rock formation on Mars some 3 billion years ago.
The dust storm on Mars that broke out at the end of May is now affecting the skies across the entire planet.