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Bringing Mars rocks back to Earth – Perseverance Rover lands on Feb. 18, a lead scientist explains the tech and goals

By Jim Bell, Professor of Earth and Space Exploration, Arizona State University
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NASA's Mars 2020 mission arrives at the red planet on Feb. 18. On the rocket is the Perseverance Rover. The rover's goal is to collect rock and soil samples to be brought back to Earth in the future.

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