Perseverance touched down on the Red Planet in early 2021 and has been active ever since. The rover was designed to explore the Jezero crater, a 28-mile-wide...
Mars had a wet past. If there had been life in that wet past it would have taken over the entire planet. A process we don’t see evidence for but should.
Which means that either life is rare or life on Mars was unlike life on earth. Of the two, the former requires less assumptions. The default is no life. The default is not life that is radically different than earth life.
I am still betting we won’t find life there.
Mars had a wet past. If there had been life in that wet past it would have taken over the entire planet. A process we don’t see evidence for but should.
Which means that either life is rare or life on Mars was unlike life on earth. Of the two, the former requires less assumptions. The default is no life. The default is not life that is radically different than earth life.