WASHINGTON, May 1 -- The House Science, Space and Technology Subcommittee on Space and Aeronautics issued the following testimony by Bethany L. Ehlmann, professor of planetary science and associate director of the Keck Institute for Space Studies at the California Institute of Technology, president of the Planetary Society, and co-investigator of the Mars Perseverance mission, as part of a video conference hearing entitled "What Do Scientists Hope to Learn with NASA's Mars Perseverance . . .

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