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  2. Galaxy - Wikipedia

    en.wikipedia.org/wiki/Galaxy

    A galaxy is a system of stars, stellar remnants, interstellar gas, dust, and dark matter bound together by gravity. [1] [2] The word is derived from the Greek galaxias (γαλαξίας), literally 'milky', a reference to the Milky Way galaxy that contains the Solar System.

  3. Constellation - Wikipedia

    en.wikipedia.org/wiki/Constellation

    A constellation is an area on the celestial sphere in which a group of visible stars forms a perceived pattern or outline, typically representing an animal, mythological subject, or inanimate object. [ 1 ]

  4. Star system - Wikipedia

    en.wikipedia.org/wiki/Star_system

    A multiple star system consists of two or more stars that appear from Earth to be close to one another in the sky. [dubious – discuss] This may result from the stars actually being physically close and gravitationally bound to each other, in which case it is a physical multiple star, or this closeness may be merely apparent, in which case it is an optical multiple star [a] Physical multiple ...

  5. Astronomical object - Wikipedia

    en.wikipedia.org/wiki/Astronomical_object

    An astronomical object, celestial object, stellar object or heavenly body is a naturally occurring physical entity, association, or structure that exists within the observable universe. [1]

  6. Stellar designations and names - Wikipedia

    en.wikipedia.org/wiki/Stellar_designations_and_names

    The first modern schemes for designating stars systematically labelled them within their constellation. The Bayer designation is such a system, published by Johann Bayer in 1603. [13] It introduced a system of designating the brightest stars in each constellation by means of Greek (or less often Latin) letters, and is still widely used.

  7. List of proper names of stars - Wikipedia

    en.wikipedia.org/wiki/List_of_proper_names_of_stars

    In 2016, the International Astronomical Union (IAU) organized a Working Group on Star Names (WGSN) [2] to catalog and standardize proper names for stars. The WGSN's first bulletin, dated July 2016, [3] included a table of 125 stars comprising the first two batches of names approved by the WGSN (on 30 June and 20 July 2016) together with names of stars adopted by the IAU Executive Committee ...

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    mail.aol.com

    Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!

  9. Asterism (astronomy) - Wikipedia

    en.wikipedia.org/wiki/Asterism_(astronomy)

    The asterism was recognized as the constellation ASH.IKU "The Field" on the MUL.APIN cuneiform tablets from about 1100 to 700 BC. [13] Alpheratz is now only considered a part of the constellation Andromeda whereas formerly the star was a part of both constellations. The Bowl of Virgo is formed by the stars Beta, Gamma, Delta, Epsilon and Eta ...