Why it matters: While not evidence of life, these discoveries show that ancient Mars had complex organic chemistry, ...

Recent discoveries have shed new light on the history of Mars, revealing evidence of ancient underground water that suggests the planet may have been habitable for longer than previously believed.

For decades, the search for life on Mars has been a story of hints and maybes, of chemical curiosities that stopped just short of a clear biological signal. That changed this year when a single, ...

A new NASA analysis concludes that it is "reasonable to hypothesize" that living things could have formed the odd organic ...

Scientist analyzed molecules found on an ancient rock on the Red Planet ...

New research has mapped 16 extensive, interlaced river systems on Mars, dating back approximately 3.7 billion years to the Early Hesperian Period. These large river systems, despite covering only ...

Long before Mars turned into the frozen desert you see today, water shaped its surface in dramatic ways. Rivers cut through highlands, lakes pooled inside craters, and floods tore open canyon walls.

Learn about geologic formation on Mars that resemble spiderwebs, serving as records of ancient groundwater flow on the planet.

Has there ever been life on Mars? Scientists have pondered this question for years, and a recent discovery suggests it just might be possible! NASA's Perseverance rover, which has been exploring Mars ...

NASA's Curiosity rover just found bizarre nodules on giant Martian "spiderwebs." Scientists are puzzled.

NASA finds carbon molecules in ancient Martian lake, and scientists admit it is difficult to explain them without life.