University of Arizona scientists received 200 milligrams of material collected from the asteroid Bennu by the OSIRIS-REx spacecraft and returned to Earth. Initial analyses indicate the samples contain plentiful amounts of water locked up in minerals like clays and are also rich in carbon, nitrogen, sulfur, and phosphorous. "We have over a 1,000 particles that are greater than half-a-millimeter, 28 particles that are greater than a centimeter, and the biggest particle is 3.5 centimeters" said the mission's principal investigator, Dante Lauretta, a Regents Professor in the University of Arizona Lunar and Planetary Laboratory. "We're going to be busy for a long, long time. This is an enormous amount of sample for us."