Adams' third opera, "Doctor Atomic" (2005), is about physicist J. Robert Oppenheimer, the Manhattan Project, and the creation and testing of the first atomic bomb. The libretto of "Doctor Atomic", written by Peter Sellars, draws on original source material, including personal memoirs, recorded interviews, technical manuals of nuclear physics, declassified government documents, and the poetry of the "Bhagavad Gita", John Donne, Charles Baudelaire, and Muriel Rukeyser. The opera takes place in June and July 1945, mainly over the last few hours before the first atomic bomb explodes at the test site in New Mexico. Characters include Oppenheimer and his wife Kitty, Edward Teller, General Leslie Groves, and Robert Wilson. Two years later, Adams extracted music from the opera to create the three-movement "Doctor Atomic Symphony".