Arizona State University: Citizen scientists help map ridge networks on Mars

Arizona State University: Citizen scientists help map ridge networks on Mars . “Nearly 14,000 citizen scientists from around the world joined in the search for the ridge networks on Mars, focusing on an area around Jezero Crater, where NASA’s Perseverance rover landed last February. Ultimately, with the help of the citizen scientists, the team was able to map the distribution of 952 polygonal ridge networks in an area that measures about a fifth of Mars’ total surface area.”

NASA: What Sounds Captured by NASA’s Perseverance Rover Reveal About Mars

NASA: What Sounds Captured by NASA’s Perseverance Rover Reveal About Mars. “The result of the recordings: a new understanding of strange characteristics of the Martian atmosphere, where the speed of sound is slower than on Earth – and varies with pitch (or frequency). On Earth, sounds typically travel at 767 mph (343 meters per second). But on Mars, low-pitched sounds travel at about 537 mph (240 meters per second), while higher-pitched sounds move at 559 mph (250 meters per second).”