Mars' strange gullies are not carved by water as once thought. New research shows sand and seasonal carbon dioxide ice are ...

Images sent back by NASA’s Viking spacecraft in the 1970s revealed some unusual streaks stretching across the arid landscapes of Mars. The sighting had scientists excited about the possibility of free ...

Scientists have found that ancient Martian lakes could have survived for decades despite freezing air temperatures. Using a newly adapted climate model, researchers showed that thin, seasonal ice ...

Mars, the Red Planet, seems to have had rivers, lakes, maybe even seas. Minerals, channels, and rock formations all hint at ...

Scientists have found seismic clues that suggest liquid water may be hiding beneath Mars' surface. By listening to the echoes of "marsquakes" — seismic waves rippling through Mars' crust — researchers ...

There might be a hidden ocean's worth of liquid water below the surface of Mars, seismic evidence suggests. According to a new paper published April 25 in the journal National Science Review, ...

New research reveals that the gullies on Mars are primarily formed by sand and seasonal carbon dioxide ice, not water, reshaping our understanding of Martian geology.

A new study by planetary scientists at Brown University and the University of Bern in Switzerland casts doubt on one of the most tantalizing clues that water might be flowing on present-day Mars. For ...

Where there’s water, there’s life—and vice versa. Aside from being a fundamental truth of science, this fact accounts for a huge amount of the studies we undertake during space exploration. Finding ...

Researchers analyzed a global database of 500,000 strange streaks that occur on steep Martian slopes, concluding that they're most likely caused by dry processes rather than liquid flow. A new study ...