I loved this as a kid , but I found my copy a few years ago and I regret trying to replay it . It really didn ' t hold up for me . <| sep |> This is the best tldr I could make , t h i n k t h e y f i n a l l y f o u n d e v idenceofancientlifeonmars reduced by 83 %. I ' m a bot They # 039 ve found signs of deltas , gullies and rivers that most likely existed in the past , and now another discovery is offering strong support that there was once life on Mars . Scientists at Arizona State University recently announced they # 039 ve discovered potential biosignatures on Earth that have quotRemarkably similar featuresquot to some the 2007 Spirit rover found on Mars . What the researchers found was that El Tatio produces silica deposits that appear nearly identical to those found by Spirit in Gusev Crater on Mars . Extended Summary Version 1 . 65 , ~ 24364 tldrs so far . % 23 autotldr PM ' s and comments are monitored , constructive feedback is welcome . Top keywords rover # 1 deposit # 2 Mars # 3 found # 4 silica # 5