Meteor Strike, Asteroid Flyby... Should We Be Worried? - NBC4 Washington

    Back-to-Back Cosmic Events

    News4's Tom Sherwood spoke with a scientist at the Smithsonian about Friday's back-to-back cosmic events. (Published Friday, Feb 15, 2013) News4's Tom Sherwood spoke with a scientist at the Smithsonian about Friday's back-to-back cosmic events. See More