The strongest hints yet that Mars once hosted living microbes are no longer theoretical models or ambiguous chemistry. They are etched into a single, oddly speckled rock in an ancient riverbed, where ...

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

NASA's plans for Mars sample return are effectively cancelled as part of a bill approved by the U.S. Congress, ending efforts to collect Perseverance rover samples that could contain evidence of alien ...

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

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 ...

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NASA’s Perseverance rover discovered chemical patterns on Mars that may indicate ancient microbial life.

A mudstone sample from Jezero Crater shows textures and minerals that on Earth often form through microbial activity. Scientists caution that nonbiological processes could also explain the features, ...

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 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 ...