How life arose on Earth remains a mystery, though many
theories have been proposed. Now a new study by Japanese scientists has
reinvigorated the discussion around panspermia: The idea that life may
have reached Earth from Mars.
The panspermia hypothesis suggests life may have arisen on another planet, with bacteria travelling through space, hitching a ride on a piece of rock or other means, eventually making its long-distance journey to Earth. Mars is a particularly appealing source, as studies suggest it was once potentially habitable with a large hemispheric ocean.
However, the biggest challenge has been determining if bacteria could survive the harsh interplanetary — or even intergalactic — journey.
Read more at:
Could life have started on Mars before coming to Earth? Possibly, new study suggests | CBC News
The panspermia hypothesis suggests life may have arisen on another planet, with bacteria travelling through space, hitching a ride on a piece of rock or other means, eventually making its long-distance journey to Earth. Mars is a particularly appealing source, as studies suggest it was once potentially habitable with a large hemispheric ocean.
However, the biggest challenge has been determining if bacteria could survive the harsh interplanetary — or even intergalactic — journey.
Read more at:
Could life have started on Mars before coming to Earth? Possibly, new study suggests | CBC News
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