The moon is more than 240,000 miles from Earth. On Friday, an asteroid the size of a city bus (35 feet/11 meters) will fly within 36,500 miles of us. Scientists around the world aren't worried. You shouldn't be either, according to Carol Paty, Assistant Professor in the School of Earth and Atmospheric Sciences.
"While 11 meters sounds big, even if as asteroid of this size did collide with the Earth it would break up into smaller pieces and burn up in the atmosphere," said Paty, who studies planets within the College of Sciences. "Even if an asteroid of this size did collide with the Earth, it would break up into smaller pieces and burn up in the atmosphere."
Experts say an asteroid would have to be rougly 460 feet (140 m) across to cause widespread damage near their impact side.