| This photograph from the Sloan Digital Sky Survey shows one of two newly discovered hypervelocity stars (marked with an arrow). SDSS J091301.0+305120 is traveling out of the galaxy at a speed of about 1.25 million miles per hour and currently is located at a distance of about 240,000 light-years from the earth. This image is about 7 arcminutes on a side, showing an area of the sky about 1/15 the size of the Full Moon. Credit: SDSS Collaboration |