Since the dawn of mankind, humans have looked up at the night sky and seen the planet Mars as a bright, orange-red star, appearing so because of the presence of iron oxide on its surface and the complete lack of liquid water. However, the red planet wasn’t always so, according to a recent study published in the journal Science.
Scientists have long believed that, in the distant past, Mars had liquid water on its surface. However, until now, they did not have an estimate of exactly how much water the planet’s surface actually held. The latest study, conducted by a team of scientists from NASA and the European Southern Obser...
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