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  2. 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.

  3. Astronomy - Wikipedia

    en.wikipedia.org/wiki/Astronomy

    Astrophysics is the branch of astronomy that employs the principles of physics and chemistry "to ascertain the nature of the astronomical objects, rather than their positions or motions in space". [ 73 ] [ 74 ] Among the objects studied are the Sun , other stars , galaxies , extrasolar planets , the interstellar medium and the cosmic microwave ...

  4. List of unsolved problems in astronomy - Wikipedia

    en.wikipedia.org/wiki/List_of_unsolved_problems...

    This article is a list of notable unsolved problems in astronomy. Problems may be theoretical or experimental. Theoretical problems result from inability of current theories to explain observed phenomena or experimental results. Experimental problems result from inability to test or investigate a proposed theory.

  5. Lists of astronomical objects - Wikipedia

    en.wikipedia.org/wiki/Lists_of_astronomical_objects

    List of Solar System objects; List of gravitationally rounded objects of the Solar System; List of Solar System objects most distant from the Sun

  6. List of astronomy websites - Wikipedia

    en.wikipedia.org/wiki/List_of_astronomy_websites

    Universe Today (UT) is a non-commercial space and astronomy news site, founded in 1999 [13] by Fraser Cain and edited by Nancy Atkinson. [14] [15] The news can then be discussed on the forums. The forum began on 24 July 2003, and was mainly used to discuss the Universe Today news as well as ask space-related questions and discuss alternate ...

  7. List of Solar System objects - Wikipedia

    en.wikipedia.org/wiki/List_of_Solar_System_objects

    Euler diagram showing the types of bodies orbiting the Sun. The following is a list of Solar System objects by orbit, ordered by increasing distance from the Sun.Most named objects in this list have a diameter of 500 km or more.

  8. Solar System - Wikipedia

    en.wikipedia.org/wiki/Solar_System

    As of 2022, the precise location of the Solar System in the clouds is an open question in astronomy. [259] Within 10 light-years of the Sun there are relatively few stars, the closest being the triple star system Alpha Centauri, which is about 4.4 light-years away and may be in the Local Bubble's G-Cloud. [260]

  9. Glossary of astronomy - Wikipedia

    en.wikipedia.org/wiki/Glossary_of_astronomy

    This glossary of astronomy is a list of definitions of terms and concepts relevant to astronomy and cosmology, their sub-disciplines, and related fields. Astronomy is concerned with the study of celestial objects and phenomena that originate outside the atmosphere of Earth. The field of astronomy features an extensive vocabulary and a ...