Life may have appeared on Mars before Earth
The recent discovery revealing that Mars could have supported microbial life raises the possibility that life could have evolved on Mars before it developed on Earth.
According to researchers, the conditions supporting life on Mars corresponds to a period about 3.8 billion years ago, which is comparable to that of Earth.
Scientists have hypothesized that life could have begun on Mars and then travelled to Earth on an asteroid. Orbital dynamics have shown that it is much easier for rocks to travel from Mars to Earth than in the other direction.
The Mars Curiosity Rover has not yet found conclusive evidence of life on Mars but continues in its investigations of the Red Planet.
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