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  2. File:Astronomy.pdf - Wikipedia

    en.wikipedia.org/wiki/File:Astronomy.pdf

    You are free: to share – to copy, distribute and transmit the work; to remix – to adapt the work; Under the following conditions: attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made.

  3. Night sky - Wikipedia

    en.wikipedia.org/wiki/Night_sky

    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.

  4. Digitized Sky Survey - Wikipedia

    en.wikipedia.org/wiki/Digitized_Sky_Survey

    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

  5. File:Probing the Sky.pdf - Wikipedia

    en.wikipedia.org/wiki/File:Probing_the_Sky.pdf

    Main page; Contents; Current events; Random article; About Wikipedia; Contact us

  6. HNSKY - Wikipedia

    en.wikipedia.org/wiki/HNSKY

    HNSKY or Hallo Northern Sky is a free and open-source planetarium program for Linux, macOS, Microsoft Windows, and Raspberry Pi to simulate the night sky. It is provided with several non-English language modules, numerous astronomical catalogues, conversion utilities and tools, as well as several stellar databases.

  7. TOPCAT (software) - Wikipedia

    en.wikipedia.org/wiki/TOPCAT_(software)

    TOPCAT is an interactive graphical viewer and editor for tabular data. [2] Although a general purpose tool capable of handling large and sparse datasets with correlation functionality its specialist application area is astronomy and it was initially designed to support virtual observatories. [3]