Add Yahoo as a preferred source to see more of our stories on Google. NASA's Mars Sample Return program has been effectively cancelled, meaning the best evidence of life on Mars could be trapped in ...

For nearly four years, NASA’s Perseverance rover has journeyed across an unexplored patch of land on Mars—once home to an ancient river delta—and collected a slew of rock samples sealed inside ...

The years-long delay of the NASA-ESA Mars Sample Return (MSR) mission leaves astrobiologists —- indeed most of humanity —- longing for some sort of next level closure on whether Mars ever had ...