20 percent of Mars' surface was likely water 4.5 billion years ago
Mars once had enough water to cover its entire surface, a study published today in Science suggests. Around 4.5 billion years ago, Mars was host to a body of water that was larger than the Arctic Ocean. At around .085 miles deep, the water would have covered Mars’ surface, but it’s more likely the pool was slightly greater than one mile deep. In that case, it would have covered around 20 percent of the planet, The Washington Post reports.
Mars also probably had seasons
The new findings come from a team of researchers who collected data via three large telescopes on Earth: the European Southern Observatory’s Very Large Telescope in Chile, and the Keck II telescope and NASA Infrared Telescope Facility in Hawaii. The scientists measured…
Source:: The Verge