The document discusses the iconic album cover of Pink Floyd's 1973 album "The Dark Side of the Moon". It describes the image on the cover, which shows a prism separating light into a rainbow over a black background. The cover gained significant attention and helped the album appeal to a broader audience. In 2011, the cover was ranked the #2 album cover of all time by Rolling Stone readers. The cover art has played a role in the album's commercial and critical success over many decades.