The Bennu sample return mission was a boon for many branches of science.
Collection of the OSIRIS-REx sample return capsule. Credit: NASA/Keegan Barber, CC BY. The Earth is constantly bombarded by fragments of rock and ice, also known as meteoroids, from outer space. Most meteoroids are as small as grains of sand and small pebbles, and burn up completely high in the atmosphere. You can see meteoroids larger