A night arrives at Cerro Paranal, a mountain in the Atacama Desert of Chile and the site for some of the world's largest telescopes. Astronomers and staff of the observatory drive the road to and from the telescopes control room. The graceful arc of the Milky Way sets in the west over the cloud-covered Pacific Ocean. The coast is only 12km away from Paranal but the high altitude and dry condition of Atacama make this site clear and transparent most of the year. Note the two inner planets Mercury and Venus in conjunction at the horizon at the beginning of the time-lapse video. Above them the Zodiacal Light appears in the early evening fading in to the bright Milky Way in constellation Scorpius and Sagittarius, which mark the central region of the galaxy. A couple of planes and few meteors appear in the sequence. The two bright stars of Alpha and Beta Centauri are captured near the left edge over the southern horizon. Near the end of the video note the strong appearance of green and red (fainter) airglow (an atmospheric phenomena) over the horizon. All rights reserved by Babak Tafreshi (btafreshi@twanight.org) and The World at Night program (twanight.org).

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