Hale Telescope mirror.. It was completed in 1948 and is still in active use. The Hale Telescope represented the technological limit in building large optical telescopes for over 30 years. It was the largest telescope in the world until the Russian BTA-6 was built in 1976, and the second largest until the construction of the Keck Observatory Keck 1 in 1993. Hale supervised the building of the telescopes at the Mount Wilson Observatory with grants from the Carnegie Institution of Washington: the telescope in 1908 and the telescope in 1917. These telescopes were very successful, leading to the rapid advance in understanding
Until the End of the World (soundtrack) The Aka Pygmy and Indigenous Australian music used in the film are from field recordings from two collections: "Centrafrique: Anthologie de la musique des Pygmées Aka", 1978, and "Les Aborigènes: Chants et danses de l'Australie du nord", 1979, respectively. Album Until the End of the World (soundtrack) Until the End of the World: Music from the Motion Picture Soundtrack is a soundtrack album to the film of the same name, released in 1991 on Warner Bros. Records. One song on the album, U2's "Until the End of the World", had been previously released on that band's 1991 album "Achtung Baby",