Show 385: Dark Matter Puzzle

You don't have the right version of the adobe flash player to see this video. Please upgrade or install it at "http://get.adobe.com/flashplayer/"

Subscribe to iTunes

Although the concept of dark matter has been around for a long time, scientists aren't really clear on what it is. Originally, scientists thought that dark matter was associated with and "stuck to" the luminous matter we see - stars, galaxies, clusters of galaxies and other groupings. But new observations confirm a suspicion that emerged a few years ago: dark matter does not always behave exactly like normal matter.