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Event horizon — In general relativity, an event horizon is a boundary in spacetime, an area surrounding a black hole or a wormhole, inside which events cannot affect an outside observer. Light emitted from inside the horizon can never reach the observer, and… … Wikipedia
Impact event — Artist s impression of a major impact event. The collision between Earth and an asteroid a few kilometers in diameter may release as much energy as several million nuclear weapons detonating simultaneously. An impact event is the collision of a… … Wikipedia
Cretaceous–Tertiary extinction event — Artist s rendering of bolide impact Badlands nea … Wikipedia
The Airborne Toxic Event — Infobox musical artist Name = The Airborne Toxic Event Img capt = Live At The El Rey August, 7 2008 Photo By Jeff Koga Landscape = no Background = group or band Origin = Los Angeles, California, U.S. Genre = Indie rock Years active = 2006 –… … Wikipedia
Ordovician–Silurian extinction event — … Wikipedia
Great Oxygenation Event — O2 build up in the Earth s atmosphere. Red and green lines represent the range of the estimates while time is measured in billions of years ago (Ga). Stage 1 (3.85–2.45 Ga): Practically no O2 in the atmosphere. Stage 2 (2.45–1.85 Ga): O2 produced … Wikipedia
Levee (event) — The Levée is a New Year s Day social event hosted by the Governor General of Canada, the Lieutenant Governors, military establishments, municipalities and other institutions. History The word Levée (from French, originally fem. pp. of lever… … Wikipedia
Levée (event) — The levée is a New Year s Day social event hosted by the Governor General of Canada, the lieutenant governors, military establishments, municipalities and other institutions. Contents 1 History 2 Present day 2.1 Refreshments … Wikipedia
Muster (event) — For other uses of the word, see muster (disambiguation). A muster (or fire muster ) is an event pertaining to fire/rescue services. It is held in a central area such as a park and has many activities for fire department members and sometimes… … Wikipedia
Georgia 4-H — Official 4 H emblem. Motto To make the best better Formation 1904 Type Youth organizatio … Wikipedia
skiing — /skee ing/, n. the act or sport of gliding on skis. [1890 95; SKI + ING1] * * * I Sport and mode of transportation involving moving over snow on a pair of long flat runners (skis) attached to shoes or boots. Skiing was born in northern Europe;… … Universalium