NASA/JPL-Caltech/ASU/MSSS
- NASA's Perseverance rover has found potential evidence of ancient microbial life on Mars.
- Scientists must bring the rock to Earth for further study, but three key features make it promising.
- The discovery is a crucial win for NASA after a series of budget cuts and mission setbacks.
NASA has snagged a chunk of rock on Mars that could someday prove to be the first clear evidence of alien life.