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  2. 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.

  3. Friedmann equations - Wikipedia

    en.wikipedia.org/wiki/Friedmann_equations

    The Friedmann equations start with the simplifying assumption that the universe is spatially homogeneous and isotropic, that is, the cosmological principle; empirically, this is justified on scales larger than the order of 100 Mpc.

  4. Stephen P. Maran - Wikipedia

    en.wikipedia.org/wiki/Stephen_P._Maran

    The Astronomy and Astrophysics Encyclopedia. John Wiley & Sons, Inc. ISBN 978-0471289418. Maran, Stephen (2012). Astronomy for Dummies (3rd ed.). Wiley Publishing, Inc. ISBN 978-1118376973. Maran, Stephen (2009). Galileo's New Universe:The Revolution In Our Understanding of the Cosmos. BenBella Books Inc. ISBN 978-1-933771-59-5.

  5. Learn About Space With These Best Astronomy Books - AOL

    www.aol.com/learn-space-best-astronomy-books...

    There’s so much to learn about the universe. Here’s where to start.

  6. Hubble's law - Wikipedia

    en.wikipedia.org/wiki/Hubble's_law

    The redshift z is often described as a redshift velocity, which is the recessional velocity that would produce the same redshift if it were caused by a linear Doppler effect (which, however, is not the case, as the velocities involved are too large to use a non-relativistic formula for Doppler shift).

  7. Category:Equations of astronomy - Wikipedia

    en.wikipedia.org/.../Category:Equations_of_astronomy

    Pages in category "Equations of astronomy" The following 71 pages are in this category, out of 71 total. This list may not reflect recent changes. A.

  8. Celestial mechanics - Wikipedia

    en.wikipedia.org/wiki/Celestial_mechanics

    Celestial mechanics is the branch of astronomy that deals with the motions of objects in outer space. Historically, celestial mechanics applies principles of physics (classical mechanics) to astronomical objects, such as stars and planets, to produce ephemeris data.

  9. Spherical coordinate system - Wikipedia

    en.wikipedia.org/wiki/Spherical_coordinate_system

    The use of degrees is most common in geography, astronomy, and engineering, where radians are commonly used in mathematics and theoretical physics. The unit for radial distance is usually determined by the context, as occurs in applications of the 'unit sphere', see applications.

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