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The Conversation
Chris Impey, University Distinguished Professor of Astronomy, University of Arizona

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

Meteorites can get pricey, but they're not the most expensive material. AP Photo/Thibault Camus

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.

An artist's illustration of a gray metallic spacecraft hovering above the dark surface of an asteroid, with an arm that reaches down to the surface.
OSIRIS-REx collected a sample from the asteroid Bennu. NASA/Goddard Space Flight Center via AP
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