NASA set to deliver biggest asteroid sample yet: What you need to know

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

A United States space agency (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.

The sample capsule will parachute into the Utah desert as its mothership, the OSIRIS-REx spacecraft, zooms off for an encounter with another asteroid.

Scientists anticipate getting about 250g…