The key to solving the mystery of the Viking results is the discovery of perchlorate on the Martian surface in 2008.

Fifty years ago, NASA’s Viking missions to Mars made groundbreaking attempts to detect life on the Red Planet. While the missions initially returned negative results, a new study published in the ...

This isn’t the famous sample reported last September, but another with different signs of past life we’re struggling to ...

The recent detection of potential signs of ancient microbial life on Mars by NASA’s Perseverance rover has sparked renewed interest in the planet’s habitability. The rover’s analysis of a Martian rock ...

NASA’s rover Perseverance spent nearly a year exploring the rim of a crater believed to have held a huge lake.

The recent announcement that scientists have spotted what they believe to be evidence suggesting ancient life on Mars seemed like the latest in an endless cycle of tantalizing hints followed by pleas ...

The discovery suggests that parts of Mars may once have supported tropical-like climates, complete with heavy, sustained rainfall.

NASA's Perseverance rover discovered rocks on Mars, providing new evidence the red planet was once a wet, habitable world that could support life.

Did Mars once have life as we know it deep in its ancient past? A recent study published in Proceedings of the National Academy of Sciences might be one step closer to answering that question as an ...

Since its arrival on the Martian surface five years ago, NASA's Perseverance rover has been busy scouring the Red Planet for signs of life and evidence of Mars' watery history. Now, thanks to its ...

The recent announcement that scientists have spotted what they believe to be evidence suggesting ancient life on Mars seemed like the latest in an endless cycle of tantalizing hints followed by pleas ...