They believe that the floods were caused by a huge meteoric impact that generated enough heat to melt massive amounts of ice on the planet. The event released carbon dioxide and methane, which combined with water vapor to form a warm and wet climate for a short time. This led to torrential rains across the planet, and the waters (along with the sediments) that slid off Mt. Sharp flooded the Gale crater. So, what does this mean exactly?
As you most likely know, the presence of water could mean the presence of life. That’s why NASA and other space agencies have been trying to find evidence of water on other celestial bodies in our solar system. “The planet had the conditions needed to support the presence of liquid water on the surface – and on Earth, where there’s water, there’s life,” Fairén explained. It’s now the Perseverance rover’s job to find evidence of ancient life on our planetary neighbor after it lands on the Martian surface in February 2021.