NASA Spacecraft Delivering Biggest Sample yet From an Asteroid

An illustration depicts the OSIRIS-REx spacecraft at the asteroid Bennu.Conceptual Image Lab/Goddard Space Flight Center/NASA via AP

Planet Earth is about to receive a special delivery—the biggest sample yet from an asteroid.

A NASA spacecraft will fly by Earth on Sunday and drop off what is expected to be at least a cupful of rubble it grabbed from the asteroid Bennu, closing out a seven-year quest.