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Fresh evidence
that Mars was once covered by oceans could increase the chance of
life on the planet.
A new study
claims Mars once had more water per square mile than Earth.
Researchers
have analysed data measuring the amount of molecular hydrogen in
the atmosphere.
Spokesman Vladimir
A Krasnopolsky says the proven abundance of water in Mars' early
history "improves the prospects" that life could have
evolved there.
The study shows
Mars' upper atmosphere contains molecular hydrogen, or H2, confirming
earlier theories of the water history of the planet.
The H2 comes
from a chemical reaction that split the hydrogen from water, and
allowed the lighter hydrogen to escape into the atmosphere.
The study is
the first to detect molecular hydrogen in the atmosphere of Mars.
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