When Italian explorer Christopher Columbus and his Spanish troops returned to Europe from the Americas in the late 15th century, they notoriously brought back the deadly pathogen responsible for syphilis. Or so...
Well, they've done it. After seven years and 6.21 billion-kilometers, NASA's OSIRIS-REx has officially delivered a capsule of precious Asteroid Bennu dust to Earth.It's a major, incredible achievement, a feat of space...
