"NASA's Billion-Dollar Mission: Stopping an Empire State Building-Sized Asteroid"

An asteroid larger than the Empire State Building, named 101955 Bennu, is on a potential collision course with Earth, prompting Nasa to take action. Nasa has hired Dante Lauretta to lead a mission to research, chart, and sample the asteroid, which could cause catastrophic damage upon impact. The OSIRIS-REx mission has already returned a sample of Bennu to Earth, and Nasa is also developing technology for planetary defense, including the upcoming Dart mission.