Fifty years since it was first released,The Dark Side of the Moonremains one of the most popular, revered, and examined rock albums of all time. Ithas sold an estimated 50 million copies worldwide while setting a record for longevity onBillboards Top 200 album chart (724 consecutive weeks after its release, and more than 950 when accounting for reappearances). Thebreakthrough masterpiece stands as a kind of alpha and omega for one of the worlds greatest rock bands, which makes its creation, development and enduring success a thoroughly fascinating story.