NASA asteroid tracker: Giant 650FT asteroid is headed for Earth approach THIS WEEKEND A COLOSSAL asteroid twice as tall as Big Ben’s clock tower will shoot past Earth this weekend, NASA’s asteroid trackers have revealed. Share: Facebook Twitter Google+ Stumble Digg Email ThisBlogThis!Share to XShare to Facebook Related Posts:Global Health: Marburg Virus, Related to Ebola, Is Found in Bats in West AfricaHow Did Rifles With an American Stamp End Up in the Hands of African Poachers?How Volcanic Activity Can Spawn TsunamisTrilobites: Perhaps Santa Had to Shout to His Eight Reindeer Because They Fell AsleepTime travel BOMBSHELL: It IS possible… and THIS is how50 mile wide FROZEN SEA discovered on Mars – enough for centuries of human colonisation