Discovery.Com had a story on Friday about new evidence that our galaxy spins around a massive black hole. By analyzing the movement of stars near the center of the Milky Way, astronomers estimate that a black hole with a mass equivalent to 2.6 million(!) suns lies at the center of galaxy. The gravitational pull is so strong near the center of the galaxy, that the stars being studied take only a few decades to orbit the center of the Milky Way compared to the 220 million years it takes the Sun to make one revolution around the galaxy.