The outstanding dark starry sky of the Atacama Desert from the Cerro Paranal Observatory in Chile. Stars of prominent constellations Orion, Canis Major, and Taurus (with the Pleiades star cluster) appear above the Observatory. The two brightest stars of the Earth night sky appear in this view: Sirius and Canopus. The Large Magellanic Clouds is on the right towards the south next to Canopus and on the far left is the Andromeda Galaxy (M31). Both red and green airglow (natural emission of the Earth upper atmosphere) appear near the horizon, mixed with the light of red emission nebulae along the Milky Way. With its dark, steady, and transparent sky, Paranal is home to some of the world's leading telescopes. Operated by the European Southern Observatory (ESO) the Very Large Telescope (VLT) is located on Paranal, composed of four 8-meter telescopes and smaller auxiliary telescopes, each 1.8 m in aperture, which are important elements of the VLT interferometer. With its dark, steady, and transparent sky, Paranal is home to some of the world's leading telescopes. Operated by the European Southern Observatory (ESO) the Very Large Telescope (VLT) is located on Paranal, composed of four 8-meter telescopes and smaller auxiliary telescopes, each 1.8 m in aperture, which are important elements of the VLT interferometer.