Orbits Animation
Animation: Images taken from the years 1995 through 2006 are used to track specific stars orbiting the proposed black hole at the center of the Galaxy. These orbits, and a simple application of Kepler's Laws, provide the best evidence yet for a supermassive black hole, which has a mass of 4 million times the mass of the Sun. Animation created by Dr. Andrea Ghez and her research team at UCLA from data sets obtained with the W. M. Keck Telescopes.
