A series of four photos taken of the Australian sky show the asteroid that nearly smashed to Earth Monday, where it could have destroyed several major cities.
If you look at the center of the photos, you can see the asteroid moving across the sky. It looks small from Earth, but according to the Associated Press:
The space ball measured between 69 feet and 154 feet in diameter. The Planetary Society said that made it the same size as an asteroid that exploded over Siberia in 1908 and leveled more than 800 square miles of forest.
National Geographic, which posted these photos, reports that the asteroid came within 41,000 miles of Earth on Monday.