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Astronomy

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Mars was once inhabited, then what happened to it? 2

Mars was once inhabited, then what happened to it?

Did life begin on Mars and then travel to Earth for its blossoming? A few years ago, a long-debated theory known as "panspermia" got new life, as two scientists separately proposed that early Earth lacked some chemicals essential to forming life, while early Mars likely had them. So, what's the truth behind the life on Mars?