Conspiracy theory fans never tire of spotting rocks which look like people, crabs or bears on Mars — but NASA’s Spirit Rover might have just spotted something really important.
The cauliflower-like minerals found inside a Martian crater may have been created by aliens, researchers from Arizona State University have said.
The protrusions — which the scientists refer to as ‘micro-digitate silica protrusions’ — were spotted by NASA’s Spirit Rover in 2008.