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Loading contentPlans a tour of galaxies, nebulae, and clusters by season, constellation, and difficulty, matched against the night's darkness and the target's altitude. The deep sky, night by night.
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.