The organic molecules could come from life or from ordinary chemistry — only samples returned to Earth can settle it.

A Stanford scientist says a new planetary model may explain why we have not found aliens yet, arguing that most small rocky ...

An instrument on the Perseverance rover has identified large, complex carbon compounds alongside unusual patterns on the ...

Researchers from the University of Oxford have uncovered evidence that Mars once hosted enormous, Earth-like magmatic systems ...

Scientists propose building a lab on the moon to screen Mars and other space samples for alien microbes before they ever ...

Could Martian mudstones be holding evidence of ancient microbes? New findings strengthen the case that the Red Planet once ...

Evidence for possible life on Mars in the ancient past continues to build, thanks to a recent discovery by NASA’s ...