Luckily there are no known threats to Earth for at least 100 years, but that doesn’t mean we’re not looking. Asteroid expert Davide Farnocchia of @NASAJPL breaks it down. Learn about how we track asteroids: nasa.gov/asteroids Producer/Editor: Jessica Wilde Producer: Scott Bednar #Asteroids #Space #Space #Astronomy #SolarSystem #Earth #Videos #Science #SafetyFirst #NASA