Credit: NASA/JPL-Caltech/ASU/MSSS Bethany Ehlmann, professor of planetary science and associate director of the Keck Institute for Space Studies at Caltech, testified before a U.S. House of Representatives subcommittee on April 29 about the scientific value of JPL’s Mars 2020 mission; JPL is managed by Caltech for NASA. Ehlmann, member of the science team and co-investigator on the rover’s Mastcam-Z and SHERLOC instrument teams, gave her testimony before the House Committee on Science, Space, and Technology Subcommittee on Space and Aeronautics in a hearing titled “What Do Scientists Hope to Learn with NASA’s Mars Perseverance Rover?” She was joined by witnesses that included Michael Meyer, the lead scientist of NASA’s Mars Exploration Program; Luther Beegle of JPL, principal investigator of the Mars Perseverance Scanning Habitable Environments with Raman & Luminescence for Organics & Chemicals (SHERLOC) instrument; and Tanja Bosak, the Mars 2020 returned sample science co-lead.