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  2. List of software for astronomy research and education

    en.wikipedia.org/wiki/List_of_Software_for...

    Listed here are software packages useful for conducting scientific research in astronomy, and for seeing, exploring, and learning about the data used in astronomy. Package Name Pro

  3. Position angle - Wikipedia

    en.wikipedia.org/wiki/Position_angle

    In astronomy, position angle (usually abbreviated PA) is the convention for measuring angles on the sky. The International Astronomical Union defines it as the angle measured relative to the north celestial pole (NCP), turning positive into the direction of the right ascension .

  4. A Question and Answer Guide to Astronomy - Wikipedia

    en.wikipedia.org/wiki/A_Question_and_Answer...

    A Question and Answer Guide to Astronomy is a book about astronomy and cosmology, and is intended for a general audience. The book was written by Pierre-Yves Bely , Carol Christian , and Jean-Rene Roy , and published in English by Cambridge University Press in 2010.

  5. Practical Astronomy with Your Calculator - Wikipedia

    en.wikipedia.org/wiki/Practical_Astronomy_with...

    Practical Astronomy with your Calculator is a book written by Peter Duffett-Smith, a University Lecturer and a Fellow of Downing College. It was first published in 1979 and has been in publication for over 30 years. The book teaches how to solve astronomical calculations with a pocket calculator.

  6. Outline of astronomy - Wikipedia

    en.wikipedia.org/wiki/Outline_of_astronomy

    The following outline is provided as an overview of and topical guide to astronomy: Astronomy – studies the universe beyond Earth, including its formation and development , and the evolution, physics , chemistry , meteorology , and motion of celestial objects (such as galaxies , planets , etc.) and phenomena that originate outside the ...

  7. List of astronomy websites - Wikipedia

    en.wikipedia.org/wiki/List_of_astronomy_websites

    This is a list astronomy websites. Some of them are CalSky, Exoplanet Archive, Exoplanet Data Explorer, Extrasolar Planets Encyclopaedia, Universe Today, Space.com and Galaxy Zoo. Out of all these Exoplanet Archive is managed by NASA. These websites provide knowledge about exoplanets, eclipses, tides, comets, stars, galaxy and other topics ...

  8. Norton's Star Atlas - Wikipedia

    en.wikipedia.org/wiki/Norton's_Star_Atlas

    Norton's Star Atlas is a set of 16 celestial charts, first published in 1910 and currently in its 20th edition under the editorship of Ian Ridpath.The Star Atlas covers the entire northern and southern sky, with accompanying reference information for amateur astronomers.

  9. Umbra, penumbra and antumbra - Wikipedia

    en.wikipedia.org/wiki/Umbra,_penumbra_and_antumbra

    Umbra, penumbra, and antumbra formed through windows and shutters. The umbra (Latin for "shadow") is the innermost and darkest part of a shadow, where the light source is completely blocked by the occluding body.

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