Astronomers map dark matter 'beach ball'

NPR: From way out in space, our home galaxy would look pretty much like a flat disc of bright stars with spiral arms. But the Milky Way is actually surrounded by a vast halo of invisible dark matter that's shaped... More... Archived source: https://web.archive.org/web/20100114025031/http://www.spacetimeandtheuniverse.com:80/general-physics/3259-astronomers-map-dark-matter-beach-ball.html