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List of years; Timelines of world history; List of timelines; Chronology; See calendar and list of calendars for other groupings of years.; See history, history by period, and periodization for different organizations of historical events.
The 10th millennium BC spanned the years 10,000 BC to 9001 BC (c. 12 ka to c. 11 ka). It marks the beginning of the transition from the Palaeolithic to the Neolithic via the interim Mesolithic (Northern Europe and Western Europe) and Epipaleolithic (Levant and Near East) periods, which together form the first part of the Holocene epoch that is generally believed to have begun c. 9700 BC (c. 11 ...
A millennium (pl. millennia or millenniums) is a period of one thousand years or one hundred decades or ten centuries, [1] [2] sometimes called a kiloannum (ka), ...
The categorisation of the past into discrete, quantified named blocks of time is called periodization. [1] This is a list of such named time periods as defined in various fields of study. These can be divided broadly into prehistorical periods and historical periods (when written records began to be kept).
3.10 20th century. 4 3rd millennium. Toggle 3rd millennium subsection. 4.1 21st century. 5 See also. Toggle the table of contents. List of years. 50 languages.
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From top left clockwise: The Parthenon, a former temple in Athens, Greece; Aristotle, Greek philosopher; Gautama Buddha, a spiritual teacher and the founder of Buddhism; Wars of Alexander the Great last from 336 BC to 323 BC; Letters of the Greek alphabet; People working during the Iron Age; Roman dictator, Julius Caesar is assassinated by the Roman Senate in 44 BC.
5.4 × 10 83 Qs (1.7 × 10 106 years): The approximate lifespan of a supermassive black hole with a mass of 20 trillion solar masses [21] 10 10 10 76.66 {\displaystyle 10^{10^{10^{76.66}}}} Qs: The scale of an estimated Poincaré recurrence time for the quantum state of a hypothetical box containing an isolated black hole of stellar mass [ 22 ...