A dive into probabilities, asteroid impact modeling, and what sort of damage an approximately 180-foot asteroid could cause on Earth.

A near-Earth asteroid as wide as the Statue of Liberty is tall could strike Earth on Dec.22, 2032, alerting planetary defense groups at the United Nations.

On Wednesday, an unprecedented memo from the International Asteroid Warning Network reached the United Nations Office for Outer Space Affairs and from there winged across the planet to government officials.