Bringing Mars rocks back to Earth – Perseverance Rover lands on Feb. 18, a lead scientist explains the tech and goals
- Written by Jim Bell, Professor of Earth and Space Exploration, Arizona State University

Editor’s note: Jim Bell is a professor in the School of Earth and Space Exploration at Arizona State University and has worked on a number of Mars missions. On Feb. 18, NASA’s Mars 2020 mission will be arriving at the red...