How much asteroid material is NASA's OSIRIS-REx probe delivering to Earth this weekend?

How much asteroid material is NASA's OSIRIS-REx probe delivering to Earth this weekend?

We'll soon find out just how much asteroid dirt and rock NASA's OSIRIS-REx spacecraft collected nearly three years ago. OSIRIS-REx's sample capsule is scheduled to come down to Earth on Sunday (Sept. 24), making a soft landing under parachutes in the Utah desert. That capsule is full of precious cargo — material OSIRIS-REx snagged from the surface of a 1,650-foot-wide (500 meters) near-Earth asteroid named Bennu in October 2020. Analyses of this space-rock stuff could reveal a great deal about …