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Date: 30 June 1908; 116 years ago (): Time: 07:17: Location: Podkamennaya Tunguska River, Yeniseysk Governorate, Russian Empire: Coordinates: 1]: Cause: Probable meteor air burst of small asteroid or comet: Outcome: Flattened 2,150 km 2 (830 sq mi) of forest Devastation to local plants and animals: Deaths: Up to 3 possible [2]: Property damage: A few damaged buildings: The Tunguska event was a ...
Instrumentation development, blast, ground shock, electromagnetic and debris measurements as well as biomedical and underground target tests. Alpha Sailor Hat: 12-14 Nov 1964 San Clemente Island, CA United States 40,000 2 HBX Underwater -200 Test of underwater blast and shock in preparation for larger Sailor Hat tests Bravo Sailor Hat: 6 Feb 1965
[10] [3] [4] The initial blast lifted approximately 700 square feet (70 m 2) of floor and launched debris and spectators towards the ice rink. [8] Shortly thereafter, a load-bearing wall underneath the stands gave way and caused an additional cave-in of about 500 square feet (50 m 2 ) of floor. [ 10 ]
There is a 50% chance that such a lethal GRB took place within two kiloparsecs of Earth during the last 500 million years, causing one of the major mass extinction events. [155] [16] The major Ordovician–Silurian extinction event 450 million years ago may have been caused by a GRB.
Fossils preserved within ancient rock may prove that photosynthesis started way earlier than we thought.
Using cutting edge carbon dating technology, authors of the study say the weapon for 480 years sat in ruin inside the building that was part of San Geronimo III, the first European settlement in ...
Nevada State Fire Marshal Thomas J. Huddleston examining the bomb. The Harvey's Resort Hotel bombing took place on August 26–27, 1980, when several men masquerading as photocopier deliverers planted an elaborately booby trapped bomb containing 1,200 pounds (540 kg) of dynamite at Harvey's Resort Hotel ("Harveys" since 1986) in Stateline, Nevada, United States. [2]
A 30-year-long question about black holes has finally been resolved. Apparently, black holes twist space time like taffy. This finding is based off a principle put forward by renowned scientist ...