Sign up for CNN's Wonder Theory science newsletter.Explore the universe with news on fascinating discoveries, scientific advancements and more.The Perseverance rover is about to build the first depot of rock and soil samples on another planet.Establishing a cache site is a milestone in the complex preparation to return the first rocks and dirt from Mars to Earth by 2033.
#back #years #opportunity #perspective #perseverance #helicopters #space-exploration #european-space-agency #perseverance-rover
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