Space rocks and asteroid dust are pricey, but these aren’t the most expensive materials used in science

Some space rocks cost nothing. Some elements and minerals are expensive because they’re so scarce.

After a journey of seven years and nearly 4 billion miles, NASA’s OSIRIS-REx spacecraft landed gently in the Utah desert on the morning of Sept. 24, 2023, with a precious payload. The spacecraft brought back a sample from the asteroid Bennu.

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