+ NASA Home + Ames Home + Sitemap + Staff Directory +Home HIGH END SYSTEMS + Pleiades + Columbia + Schirra NAS DIVISION IMAGES Simulation of Coalescing Black Hole Binaries A simulation of X-polarized gravitational radiation from the merger of two black holes. The spherical shape in the center represents the horizon of the merged remnant. For a typical supermassive black hole of 1 million solar masses, this picture is on the order of 1 billion kilometers across. Credit: NASA Science Mission Directorate, Principle Investigator, James Van Meter + Feedback + Site Help + NASA Privacy Statement, Disclaimer, and Accessibility Certification Editor: Jill Dunbar Webmaster: Ryan Spaulding NASA Official: Rupak Biswas + Contact NAS Last Updated: August 20, 2009