Meteorites bombarding the Red Planet may have carried so much water that it could have covered the planet in a layer 300 metres deep if spread out, while also depositing molecules essential for life
The meteorites that bombarded Mars during the early days of the inner solar system may have carried enough water to create a 300-metre-deep ocean on the planet.at the University of Copenhagen in Denmark and his colleagues have analysed the concentration of a rare chromium isotope, known as chromium-54, in samples of meteorites that have come to Earth from Mars to estimate how much water was deposited on the Red Planet by asteroids.as its crust solidified some 4.5 billion years ago.
If the original bombarding asteroids were just 10 per cent water, the lower limit for C-type meteorites, they would have deposited enough of the molecule to create a global ocean, say the researchers. If spread out over the whole planet, the water would form a layer 300 metres deep.
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