The Pleiades - or Seven Sisters - are the 45th entry in Messier's Catalogue and one of the most famous collections of stars in our night sky. "Diamonds on black velvet," as Pete describes them. This video features John Hurst (Nottingham Astronomical Society), Pete Lawrence (astronomy expert and broadcaster) and Paul Crowther (University of Sheffield) More on the people who let us use their images: http://www.deepskyvideos.com/pages/image_contributors.html Deep Sky Videos website: http://www.deepskyvideos.com/ Twitter: https://twitter.com/#!/DeepSkyVideos Facebook: http://www.facebook.com/DeepSkyVideos Flickr: http://www.flickr.com/photos/68847473@N02/ More about the astronomers in our videos: http://www.deepskyvideos.com/pages/contributors.html Videos by Brady Haran Editing (and some extra filming) in this video by Stephen Slater