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Il y a 8 heures · New research hints that plate tectonics began earlier than 4 billion years ago — not long after Earth had formed.
Il y a 8 heures · List of historical earthquakes Historical earthquakes is a list of significant earthquakes known to have occurred prior to the early 20th century. As the events listed here occurred before routine instrumental recordings, seismotomography imaging technique, [1] later detections using space satellites from outer space [2] — they rely mainly on the analysis of written sources, observations of ...
Il y a 8 heures · t. e. The cosmic microwave background ( CMB or CMBR) is microwave radiation that fills all space in the observable universe. It is a remnant that provides an important source of data on the primordial universe. [1] With a standard optical telescope, the background space between stars and galaxies is almost completely dark.
Il y a 8 heures · Fossil specimens of tigers have also been reported from the Middle-Late Pleistocene of Japan. [44] Results of a phylogeographic study indicate that all living tigers have a common ancestor that lived between 108,000 and 72,000 years ago. [31] Genetic studies suggest that the tiger population contracted around 115,000 years ago due to ...
Il y a 8 heures · December 20, 1968. Trinity was the code name of the first detonation of a nuclear weapon, conducted by the United States Army at 5:29 a.m. MWT [a] (11:29:21 GMT) on July 16, 1945, as part of the Manhattan Project. The test was of an implosion-design plutonium bomb, nicknamed the "gadget", of the same design as the Fat Man bomb later detonated ...
Il y a 8 heures · () Ohio State University Former names Ohio Agricultural and Mechanical College (1870–1878) Motto Disciplina in civitatem ( Latin) Motto in English "Education for Citizenship" Type Public land-grant research university Established March 22, 1870 ; 154 years ago [1] Parent institution University System of Ohio Accreditation HLC ...
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