Skyscraper-sized asteroids are flying past Earth this weekend

Feel that gust of wind whipping by? Was it a summer breeze? Or could it have been the two, giant, building-sized asteroids whipping past the Earth this weekend? (It couldn't, but just imagine.)

The two space objects were documented by NASA, and will fly past — and safely miss! — our planet on July 29 and July 30, according...