Mars Missions

FILE - In this Dec. 17, 2019 photo made available by NASA, engineers monitor a driving test for the Mars rover Perseverance in a clean room at the Jet Propulsion Laboratory in Pasadena, Calif. The robotic vehicle, scheduled to launch on July 30, 2020, is planned to touch down in an ancient river delta and lake known as Jezero Crater, not quite as big as Florida’s Lake Okeechobee. (J. Krohn/NASA via AP, File)