Comet Enthusiast

They should have just asked Ford Prefect. U.S. astronomers have discovered the Milky Way has just two major arms of stars, not the four arms of the current model. Led by Robert Benjamin of the University of Wisconsin-Whitewater, using the Spitzer Space Observatory infrared detectors the scientists based their conclusion on an evaluation of 800,000 images of an expansive swath of the Milky Way taken by NASA'a Spitzer telescope.