Mars Sample Return: When a Martian Souvenir Threatens Earth
© NASA/JPL-Caltech/ASU/MSSS (detail) Perseverance Drills Mars | The Mars rover is doing some digging on the red planet: Perseverance has already collected six rock samples. During its mission, the rover will collect multiple samples and deposit them on the planet’s surface. The sample containers would then be collected by another rover and returned to Earth …
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