NASA's Perseverance rover just took another big step in its mission to find ancient Mars life, with the rover collecting (and naming) another rock sample from the Red Planet. For decades, Mars has been a deep source of fascination for astronomers on Earth.
The nearby planet is one of Earth's closest neighbors, has a solid surface for humans to walk on, and is believed to have once had ancient life billions of years ago. From studying Mars' environment to sending the first humans there, there's
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