A massive landslide would have dammed the Colorado River, forming a deep lake that has since dried up. A meteorite impact thousands of years ago may have triggered a landslide in the Grand Canyon and reshaped the Colorado River that runs through the national park.

The space rock came as close as within 4.15 million miles from our planet, according to NASA's Jet Propulsion Laboratory.

Christian Varady was watching the sky outside his Cantonment home when he saw a color-changing fireball fall into the neighborhood.