Oct. 24, 2023
Chris Impey, a Distinguished Professor of Astronomy at the University of Arizona, writes that 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. Impey also compares the price of several elements and minerals used in scientific research.