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The night sky is the nighttime appearance of celestial objects like stars, planets, and the Moon, which are visible in a clear sky between sunset and sunrise, when the Sun is below the horizon. Natural light sources in a night sky include moonlight , starlight , and airglow , depending on location and timing.
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Sky Chart – Free Northern Sky Chart Cutout. Planispherium – Free Northern Sky Chart Cutout in Latin; SFA Star Charts – Free star charts; Geody Star Charts – Free (CC-by-sa) printer friendly star charts for several latitudes and times of the year; An online star chart; Monthly sky maps for every location on Earth Archived 2007-09-13 at ...
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The Digitized Sky Survey (DSS) is a digitized version of several photographic astronomical surveys of the night sky, produced by the Space Telescope Science Institute between 1983 and 2006. Versions and source material