Osiris-Rex leaves its mark on Asteroid Bennu
Like boot prints on the Moon, NASA's OSIRIS-REx spacecraft left its mark on asteroid Bennu. Now, new images - taken during the spacecraft's final fly-over on April 7 - reveal the aftermath of its historic encounter with the asteroid. The spacecraft flew within 2.3 miles (3.7 km) of the asteroid - the closest it has been since the Touch-and-Go, or TAG, sample collection event on Oct. 20, 20