Near Earth Object Planetary Defence

Subscribe – http://goo.gl/wpc2Q1 If Jupiter fails to protect us from an extinction level comet is there anything we can do to protect ourselves? Observatories and an army of astronomers search the skies 24 hours a day hunting for comets and asteroids that threaten a planet killing event. Clip taken from our documentary “Comets”. Watch it here – https://youtu.be/ggwX_uZW3i4