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  2. Timeline of the early universe - Wikipedia

    en.wikipedia.org/wiki/Timeline_of_the_early_universe

    The timeline of the early universe outlines the formation and subsequent evolution of the Universe from the Big Bang (13.799 ± 0.021 billion years ago) [1] to the present day. An epoch is a moment in time from which nature or situations change to such a degree that it marks the beginning of a new era or age .

  3. Chronology of the universe - Wikipedia

    en.wikipedia.org/wiki/Chronology_of_the_universe

    The chronology of the universe describes the history and future of the universe according to Big Bang cosmology.. Research published in 2015 estimates the earliest stages of the universe's existence as taking place 13.8 billion years ago, with an uncertainty of around 21 million years at the 68% confidence level.

  4. Age of the universe - Wikipedia

    en.wikipedia.org/wiki/Age_of_the_universe

    In physical cosmology, the age of the universe is the time elapsed since the Big Bang.Astronomers have derived two different measurements of the age of the universe: [1] a measurement based on direct observations of an early state of the universe, which indicate an age of 13.787 ± 0.020 billion years as interpreted with the Lambda-CDM concordance model as of 2021; [2] and a measurement based ...

  5. Timeline of cosmological theories - Wikipedia

    en.wikipedia.org/wiki/Timeline_of_cosmological...

    1785 – William Herschel proposes a heliocentric model of the universe that Earth's Sun is at or near the center of the universe, which at the time was assumed to only be the Milky Way Galaxy. [74] 1791 – Erasmus Darwin pens the first description of a cyclical expanding and contracting universe in his poem The Economy of Vegetation.

  6. Cosmic Calendar - Wikipedia

    en.wikipedia.org/wiki/Cosmic_Calendar

    Timeline of natural history; Timeline of plant evolution – Chronological outline of major events in the development of plants; Chronology of the universe – History and future of the universe; Timeline of the Middle Ages – Timeline of events 5th–15th century CE; Cosmic timeTime coordinate used in cosmology

  7. The Birth and Death of the Universe May Hinge on Black Holes

    www.aol.com/news/birth-death-universe-may-hinge...

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  8. Timeline of the Universe - Wikipedia

    en.wikipedia.org/wiki/Timeline_of_the_Universe

    The timeline of the Universe lists events from its creation to its ultimate final state. For a timeline of the universe from formation to the present day, see: Timeline of cosmological epochs; For a timeline of the universe from the present to its presumed conclusion, see: Timeline of the far future

  9. Timeline of astronomy - Wikipedia

    en.wikipedia.org/wiki/Timeline_of_astronomy

    The map shows "ripples", caused by slight variations in the density of the early universe – the seeds of galaxies and galaxy clusters. The 10-meter Keck telescope on Mauna Kea, Hawaii, is completed. The first revolutionary new wave of telescopes, the Keck's main mirror is made of 36 six-sided segments, with computers to control their alignment.