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See calendar and list of calendars for other groupings of years. See history , history by period , and periodization for different organizations of historical events. For earlier time periods, see Timeline of the Big Bang , Geologic time scale , Timeline of evolution , and Logarithmic timeline .
This page is an index to individual articles for years. Years are shown in chronological order. 1st millennium BC. 10th century BC. 1000; 999 ...
[f] At 9:03 a.m., [g] the South Tower (WTC 2) was struck by United Airlines Flight 175; it collapsed at 9:59 a.m. [h] after burning for 56 minutes. The towers' destruction caused major devastation throughout Lower Manhattan, and more than a dozen adjacent and nearby structures were damaged or destroyed by debris from the plane impacts or the ...
The 9/11 attacks left 2,977 dead across New York, Washington, D.C. and Pennsylvania, according to the 9/11 Memorial and Museum. That total includes the 2,753 who died in New York, 184 people at ...
9:03:02 [48] South Tower, World Trade Center, New York City, New York: Flight 175 crashes into the South Tower of the World Trade Center between the 77th and 85th floors. 9:28: United States airspace Flight 93 is hijacked. 9:37:46: The Pentagon, Arlington, Virginia: Flight 77 crashes into The Pentagon. 9:59:00
A person walks though the Empty Sky 9/11 memorial as the sun rises behind the skyline of Lower Manhattan and One World Trade Center on 23 years since the 9/11 attacks, as seen from Jersey City ...
Recognizable humans emerged at most 2 million years ago, a vanishingly small period on the geological scale. The earliest undisputed evidence of life on Earth dates at least from 3.5 billion years ago, [7] [8] [9] during the Eoarchean Era, after a geological crust
Geologic time is the timescale used to calculate dates in the planet's geologic history from its origin (currently estimated to have been some 4,600 million years ago) to the present day. Radiometric dating measures the steady decay of radioactive elements in an object to determine its age. It is used to calculate dates for the older part of ...