Skyscraper-sized asteroid and 4 others speed past Earth on the same day CBS News4 large asteroids, including a skyscraper-size 'city killer,' will zoom past Earth in a 12-hour span today (Oct. 24) Livescience.com‘City killer’ asteroid is one of 4 to graze Earth’s orbit today New York Post NASA sounds alert: Stadium-sized asteroid heading straight towards Earth at 16km per second Business TodayA giant 500-foot, building-sized asteroid is approaching Earth at a frightening speed Moneycontrol