Scientists are working with NASA’s Curiosity Rover to put together a picture of how Mars was billions of years ago.

• The Curiosity Rover was sent to Mars in 2012, to explore the huge Gale crater.
• After several years of exploration, evidence suggests that around 3.7 billion years ago, a large meteor impact blasted a big crater on Mars’ surface. It also cracked the rock below.
• As it was a wetter time in Mars’ history, freshwater from rain and snow must have filled up the Gale crater to form lakes, carrying in sand and silt too.
• This groundwater would have seeped into these cracks in the rocky bottom of the crater.
• Over time, when the surface of Mars dried up, groundwater still remained trapped below the dusty surface.
• Sediment patterns show that a lot of water was present at one point in time.

Drilling at the crater has also revealed minerals and other key energy sources that microbes could’ve used to survive.

Similar Stories

• Mars Planet Mysteries: Ancient Lake Revealed
• Exploring Ancient Rivers: NASA’s Mars Perseverance
• Mars – Frozen water discovered under a Grand Canyon

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