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Encyclopedia > Bolide

The term bolide (from the Greek βολις, bolis, missile) can refer to either an extraterrestrial body that collides with the Earth, or to an exceptionally bright, fireball-like meteor regardless of whether it ultimately impacts the surface. Earth, also known as Terra, and (mostly in the 19th century) Tellus, is the third-closest planet to the Sun. ... A burst of meteors A meteor is the visible path of a meteoroid that enters the Earths (or another bodys) atmosphere, commonly called a shooting star or falling star. ...


The object itself is a meteoroid; the streak of light is a meteor (or shooting star). If the meteor is brilliant enough to cast shadows, it is a fireball. Finally, if the object appears to explode, it is called a detonating fireball or bolide; an alternate definition holds that it is a bolide if sound can be heard coming from its passage. (Example: 3 December 2005 near Albany in south-west Western Australia [1].) A meteoroid is a relatively small (sand- to boulder-sized) fragment of debris in the Solar System. ... The term fireball is often used in reference to any large explosion or burst of fire. ... December 3 is the 337th (in leap years the 338th) day of the year in the Gregorian calendar. ... 2005 (MMV) is a common year starting on Saturday of the Gregorian calendar. ... Albany is a city of approximately 30,000 people on the south coast of Western Australia, 400 kilometres southeast of Perth. ... Motto: Cygnis Insignis (Distinguished by its swans) Nickname: Wildflower State Other Australian states and territories Capital Perth Government Governor Premier Const. ...


When used in the first sense, the bolide may explode either on impact with the Earth's surface or at a low altitude above it, creating a large impact crater. It is a generic term that does not imply the nature of the impacting body, i.e., whether it is a rocky or metallic meteorite, asteroid, icy comet, etc. Some scientists suggest that a glancing collision with a planet about the mass of Mars, ca. 4.5 billion years ago, may have formed the Moon. Artists impression of a major impact event. ... This article is about impact craters, also known as meteor craters. ... A meteorite is a small extraterrestrial body that reaches the Earths surface. ... An asteroid is a small, solid object in our Solar System, orbiting the Sun. ... Photo of the comet Hale-Bopp above a tree. ... Mars is the fourth planet from the Sun in the solar system, named after the Roman god of war (the counterpart of the Greek Ares), on account of its blood red color as viewed in the night sky. ... The word billion and its equivalents in other languages refer to one of two different numbers. ... Crust composition Oxygen 43% Silicon 21% Aluminium 10% Calcium 9% Iron 9% Magnesium 5% Titanium 2% Nickel 0. ...


Since the Chicxulub bolide has been suggested as the cause of the extinction event that exterminated the dinosaurs 65 million years ago, bolides are frequently suggested as causes of major climate changes and mass extinctions. However, no further bolide-induced extinction events have yet been securely identified. Compare Tollmann's hypothetical bolide for an example of bolide speculations in currently popular alternative geology. Radar topography reveals the 180 kilometer (112 mile) wide ring of the crater (image courtesy NASA/JPL-Caltech) Chicxulub Crater is an ancient impact crater buried underneath the Yucatan peninsula, with its center located approximately underneath the town of Chicxulub, Yucatán, Mexico. ... The Cretaceous-Tertiary (K-T or KT) extinction event, also known as the KT boundary, was a period of massive extinction of species, about 65. ... Orders Saurischia    Sauropodomorpha    Theropoda Ornithischia Dinosaurs are animals that dominated the terrestrial ecosystem for over 160 million years. ... Variations in CO2, temperature and dust from the Vostok ice core over the last 400 000 years The term climate change is used to refer to changes in the Earths global climate or regional climates. ... An extinction event (also extinction-level event, ELE) is a period in time when a large number of species die out. ... Alexander Tollmanns bolide is a hypothesis presented by Austrian professor of geology Dr. Alexander Tollmann, suggesting that one or several bolides (asteroids or comets) struck the Earth at 7640 BCE (±200), with a much smaller one at 3150 BCE (±200). ... Geology (from Greek γη- (ge-, the earth) and λογος (logos, word, reason)) is the science and study of the Earth, its composition, structure, physical properties, history, and the processes that shape it. ...


Noteworthy bolide impacts include:

Vredefort is a meteor crater in the Free State Province of South Africa. ... Sudbury Basin is the oval structure, next to the much younger lake-filled Wanapitei crater The Sudbury Basin is the second largest impact crater on earth, and a major geologic structure in Ontario, Canada. ... Radar topography reveals the 180 kilometer (112 mile) wide ring of the crater (image courtesy NASA/JPL-Caltech) Chicxulub Crater is an ancient impact crater buried underneath the Yucatan peninsula, with its center located approximately underneath the town of Chicxulub, Yucatán, Mexico. ... The Yucatán Peninsula separates the Caribbean Sea from the Gulf of Mexico. ... Lake Manicouagan as seen from Earth orbit. ... Popigai is a meteor crater in Russia. ... Acraman is a meteor crater in South Australia, Australia. ... The Chesapeake Bay Impact Crater was formed by the impact of an extraterrestrial bolide that hit about 35. ... Mjølnir Impact Crater is a 40 km wide impact crater in the Barents Sea. ... Southeastern portion of Barents Sea, the Kola Peninsula and the White Sea. ... Approximate location of the Silverpit crater The Silverpit crater is a crater in the North Sea off the coast of the United Kingdom. ... The North Sea is a sea of the Atlantic Ocean, located between the coasts of Norway and Denmark in the east, the coast of the British Isles in the west, and the German, Dutch, Belgian and French coasts in the south. ... The Barringer Crater, also known as the Meteor Crater, is a famous impact crater created by a meteorite, located about 55 kilometers east of Flagstaff in the northern Arizona desert (USA). ... State nickname: The Grand Canyon State, The Copper State Other U.S. States Capital Phoenix Largest city Phoenix Governor Janet Napolitano (D) Senators John McCain (R) Jon Kyl (R) Official language(s) English Area 295,254 km² (6th)  - Land 294,312 km²  - Water 942 km² (0. ... Trees felled by the Tunguska blast. ... Siberia Siberia (Russian: , common English transliterations: Sibir’, Sibir; from the Tatar for “sleeping land”) is a vast region of Russia and northern Kazakhstan constituting almost all of northern Asia. ... 1908 is a leap year starting on Wednesday (link will take you to calendar). ... V.A.Chernobrov painting of a falling Vitim bolide History Event The Vitim event or Bodaybo event is the supposed fall of a big extraterrestial object (probably a meteorite or comet nucleus) that occurred in the basin of Vitim River and near the town of Bodaybo in the Mamsko-Chuisky... 2002 (MMII) is a common year starting on Tuesday of the Gregorian calendar. ... The Manson impact crater is located near the site of Manson, Iowa where a meteorite landed during the Cretaceous Period, 74 million years ago. ...

See also


  Results from FactBites:
 
Bolide - Wikipedia, the free encyclopedia (276 words)
When used in the first sense, the bolide may explode either on impact with the Earth's surface or at a low altitude above it, creating a large impact crater.
It is a generic term that does not imply the nature of the impacting body, i.e., whether it is a rocky or metallic meteorite, asteroid, icy comet, etc. Some scientists suggest that a glancing collision with a planet about the mass of Mars, ca.
Since the Chicxulub bolide has been suggested as the cause of the extinction event that exterminated the dinosaurs 65 million years ago, bolides are frequently suggested as causes of major climate changes and mass extinctions.
  More results at FactBites »


 

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