Mars Probably Had More Water Than the Arctic Ocean, Study Says

TIME

Mars likely had a body of water larger than the Arctic Ocean, according to a new study by NASA scientists.

The size of the Martian ocean is significantly larger than previously thought and provides further evidence that the planet may have once had the ability to support life. The body of water would have been large enough to cover the planet’s entire surface in 450-feet deep water, according to the study published in the journal Science, though it was likely concentrated in smaller areas.

“Our study provides a solid estimate of how much water Mars once had, by determining how much water was lost to space,” said Geronimo Villanueva, a NASA scientist and study author. “With this work, we can better understand the history of water on Mars.”

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The scientists analyzed water on Mars today and compared it to water from a 4.5-billion-year-old Mars meteorite to determine…

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