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Common Era and Before the Common Era are alternatives to the original Anno Domini (AD) and Before Christ (BC) notations used for the same calendar era. The two notation systems are numerically equivalent: "2025 CE" and "AD 2025" each describe the current year; "400 BCE" and "400 BC" are the same year. [1] [2] The expression can be traced back ...
Mid/late-2021 – Science first light of the Vera C. Rubin Observatory is anticipated for 2021 with full science operations to begin a year later. [23] [24] [25] Nancy Grace Roman Space Telescope, part of NASA's Exoplanet Exploration Program. Launch is tentatively scheduled for 2027.
5000 BCE – Chinese discover fermentation through beer making. 6000 BCE – Yogurt and cheese made with lactic acid-producing bacteria by various people. 4500 BCE – Egyptians bake leavened bread using yeast. [1] 500 BCE – Moldy soybean curds used as an antibiotic. 300 BCE – The Greeks practice crop rotation for maximum soil fertility. [2]
Astronomers use the Julian calendar for years before 1582, including the year 0, and the Gregorian calendar for years after 1582, as exemplified by Jacques Cassini (1740), [2] Simon Newcomb (1898) [3] and Fred Espenak (2007). [4] The prefix AD and the suffixes CE, BC or BCE (Common Era, Before Christ or Before Common Era) are dropped. [1]
1452/1453 mystery eruption in the New Hebrides arc, Vanuatu; the location of this eruption in the South Pacific is uncertain, as it has been identified from distant ice core records; the only pyroclastic flows are found at Kuwae; 36 to 96 km 3 (8.6 to 23.0 cu mi) of tephra; 175,000,000–700,000,000 t (193,000,000–772,000,000 short tons) of ...
599–527 BCE: Mahavira, 24th and last Tirthankar of this era. [10] d. 507 BCE: Ganadhar Sudharma Swami; d. 470 BCE:establishment of the Śrīmali and Porvāl clans by Swayambrabhasuri of Upkesa Gaccha's. [11] 5th century BCE:Establishment of the Oswāl clan by Ratnabrabhasuri of Upkesa Gaccha of Śvetāmbara Jains. [11] d. 443 BCE: Barli Jain ...
From 1948 until December 1961, the Republic of Korea officially [2] reckoned years by adding 2333 to the Common Era year. The year 2333 BC and the related myth are sometimes presented matter-of-factly as history rather than mythology in Korea. [3]
From the 4th Millennium BCE to the 2nd Millennium BCE, hundreds of proto-cities in the Near East, Egypt, and the Indus Valley transition into city-states. [1] Records of those geopolitical changes are complicated by mythologization, historical revisionism, missing information, lack of corroborating primary sources, and lack of archeological evidence.