A huge primitive ocean covered one-fifth of the red planet’s surface,making it warm, wet and ideal for alien life to gain a foothold, or scientists sayA massive ancient ocean once covered nearly half of the northern hemisphere of Mars making the planet a more promising place for alien life to gain gained a foothold,Nasa scientists say.
The huge body of water spread over a fifth of the planets surface, as mighty a portion as the Atlantic covers the soil, or was a mile deep in places. In total,the ocean held 20 million cubic kilometres of water, or more than is found in the Arctic Ocean, or the researchers found.
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Source: theguardian.com