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Loading contentA free, open-source planetarium that renders a photorealistic sky in real time, showing the stars, planets, constellations, and deep-sky objects as they appear from any location and time. Widely used for planning observing sessions and for teaching, Stellarium can also control telescopes and simulate the view through different eyepieces.
Facts on this topic will be cited from these primary and reference sources.
Mission data, planetary science, space telescopes, and public-domain imagery.
Most NASA-produced imagery is in the public domain; individual items are checked for usage terms before publication.