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  2. List of astronomical catalogues - Wikipedia

    en.wikipedia.org/wiki/List_of_astronomical...

    Se — Sersic (selected list of peculiar galaxies and groups of galaxies) See — T.J.J. See (Thomas Jefferson Jackson See, 1866–1962) (double stars) (related to the 'Lambda' catalogue which is mentioned in T.W.Webb's Celestial Objects for Common Telescopes, Volume 2: The Stars, pages 285–319: Index of Double Stars, Epoch 2000).

  3. Hierarchy of angels - Wikipedia

    en.wikipedia.org/wiki/Hierarchy_of_angels

    Pseudo-Dionysius (On the Celestial Hierarchy) and Thomas Aquinas (Summa Theologiae) drew on passages from the New Testament, specifically Ephesians 1:21 and Colossians 1:16, to develop a schema of three Hierarchies, Spheres or Triads of angels, with each Hierarchy containing three Orders or Choirs.

  4. List of largest stars - Wikipedia

    en.wikipedia.org/wiki/List_of_largest_stars

    25.4 ± 0.2 [96] AD This is the nearest red giant to the Earth, and the fourth brightest star in the night sky. Pollux (β Geminorum) 9.06 ± 0.03 [91] AD The nearest giant star to the Earth. Spica (α Virginis A) 7.47 ± 0.54 [97] One of the nearest supernova candidates and the sixteenth-brightest star in the night sky. Regulus (α Leonis A) 4 ...

  5. Look Up: The Top Celestial Events Of 2025 - AOL

    www.aol.com/news/look-top-celestial-events-2025...

    September. The full Harvest Moon on Sept. 17 signifies the symbolic start of what for many is their favorite season.. October. The first official full moon of the fall, the Hunter’s Moon on Oct ...

  6. Messier object - Wikipedia

    en.wikipedia.org/wiki/Messier_object

    The list he compiled contains only objects found in the sky area he could observe: from the north celestial pole to a celestial latitude of about −35.7° . He did not observe or list objects visible only from farther south, such as the Large and Small Magellanic Clouds. [13]

  7. Glossary of astronomy - Wikipedia

    en.wikipedia.org/wiki/Glossary_of_astronomy

    A-type star In the Harvard spectral classification system, a class of main-sequence star having spectra dominated by Balmer absorption lines of hydrogen. Stars of spectral class A are typically blue-white or white in color, measure between 1.4 and 2.1 times the mass of the Sun, and have surface temperatures of 7,600–10,000 kelvin.

  8. Lists of astronomical objects - Wikipedia

    en.wikipedia.org/wiki/Lists_of_astronomical_objects

    List of Solar System objects most distant from the Sun; List of Solar System objects by size; Lists of geological features of the Solar System; List of natural satellites (moons) Lists of small Solar System bodies; Lists of comets; List of meteor showers; Minor planets. List of minor planets. List of exceptional asteroids; List of minor planet ...

  9. List of most massive stars - Wikipedia

    en.wikipedia.org/wiki/List_of_most_massive_stars

    Eclipsing binary stars are the only stars whose masses are estimated with some confidence. However note that almost all of the masses listed in the table below were inferred by indirect methods; only a few of the masses in the table were determined using eclipsing systems.