• NASA illustration of a supermassive black hole in the nearby spiral galaxy NGC 1365.

    It has long been suspected that gigantic black holes lurking in the heart of galaxies rotate faster and grow larger as they feast on matter.

    LAST UPDATE : Feb 27, 2013, 2:39 PM EST
  • A circular hole in the ice of Chebarkul Lake where a meteor reportedly struck the lake near Chelyabinsk, about 1500 kilometers (930 miles) east of Moscow, Russia, Friday, Feb. 15, 2013.

    A meteor streaked across the sky and exploded over Russia's Ural Mountains with the power of an atomic bomb, its sonic blasts shattering countless windows and injuring hundreds.

    LAST UPDATE : Feb 15, 2013, 5:55 PM EST