NASA’S rover based on the Red Planet could have found the first solid proof that Mars once housed alien life, it has been revealed.
Scientists have reviewed images taken by the Spirit rover nearly a decade ago, and have concluded that NASA may have previously overlooked evidence contained in them that could point towards them being biosignatures for past early forms of life in outer space on the planet.
A new study published in Nature Communications suggests rocky outcrops and regoliths formed of opaline silica that the rover photographed in the Gusev crater in 2007 potentially have these biosignatures, which are natural traces of current or past life.