Massive Asteroid To Fly By Earth Today

An asteroid the size of a city block will travel by Earth Thursday.  Experts say there is no risk of a collision and people of Earth may be able to play the role of spectators.  The team running the Slooh Space Camera will train a telescope on the Canary Islands and stream the footage live online beginning at 8:00 PM EDT.  


(h/t MSNBC)