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Smiley face on Mars is a telltale sign of its past
Mars didn't lose all its water without a fight. The planet, today 1,000 times drier than the driest desert on Earth, gradually lost its insulating atmosphere. The Red Planet's once great Martian ...
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'Smiley face' discovered on Mars could contain indicators of life
A 'smiley face' has been discovered on the surface of Mars and scientists say this could show indicators of life on the planet. It can only be seen using infrared technology but it is the remnant ...