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  2. Timeline of astronomy - Wikipedia

    en.wikipedia.org/wiki/Timeline_of_astronomy

    The Hindu cosmological time cycles explained in the Surya Siddhanta, give the average length of the sidereal year (the length of the Earth's revolution around the Sun) as 365.2563627 days, which is only 1.4 seconds longer than the modern value of 365.256363004 days. [8]

  3. History of astronomy - Wikipedia

    en.wikipedia.org/wiki/History_of_astronomy

    The history of astronomy focuses on the contributions ... On the different days of the year each hour was ... Society for the History of Astronomy; Timeline of ...

  4. Astronomy Day - Wikipedia

    en.wikipedia.org/wiki/Astronomy_Day

    Astronomy Day is an annual event in various countries, intended to provide a means of interaction between the general public and various astronomy enthusiasts, groups and professionals. History [ edit ]

  5. Timeline of Solar System astronomy - Wikipedia

    en.wikipedia.org/wiki/Timeline_of_Solar_System...

    The principal change was to space leap years differently so as to make the average calendar year 365.2425 days long, more closely approximating the 365.2422-day 'tropical' or 'solar' year that is determined by the Earth's revolution around the Sun. The reform advanced the date by 10 days: Thursday 4 October 1582 was followed by Friday 15 ...

  6. Cosmic Calendar - Wikipedia

    en.wikipedia.org/wiki/Cosmic_Calendar

    The Cosmic Calendar is a method to visualize the chronology of the universe, scaling its currently understood age of 13.8 billion years to a single year in order to help intuit it for pedagogical purposes in science education or popular science.

  7. Timeline of discovery of Solar System planets and their moons

    en.wikipedia.org/wiki/Timeline_of_discovery_of...

    The timeline of discovery of Solar System planets and their natural satellites charts the progress of the discovery of new bodies over history. Each object is listed in chronological order of its discovery (multiple dates occur when the moments of imaging, observation, and publication differ), identified through its various designations (including temporary and permanent schemes), and the ...

  8. Astronomical chronology - Wikipedia

    en.wikipedia.org/wiki/Astronomical_chronology

    Astronomical chronology, or astronomical dating, is a technical method of dating events or artifacts that are associated with astronomical phenomena.Written records of historical events that include descriptions of astronomical phenomena have done much to clarify the chronology of the Ancient Near East; works of art which depict the configuration of the stars and planets and buildings which ...

  9. Category:Astronomy timelines - Wikipedia

    en.wikipedia.org/wiki/Category:Astronomy_timelines

    Timeline of knowledge about galaxies, clusters of galaxies, and large-scale structure; Graphical timeline from Big Bang to Heat Death; Graphical timeline of the universe; Graphical timeline of the Big Bang