The Tagish Lake meteorite impacted the Earth on January 18, 2000; the reported sighting in the Tagish Lake area in the Yukon Territory and northern British Columbia, Canada was followed-up by gathering more than 500 fragments of the meteorite, collected upon the lake's frozen surface. A meteorite is a natural object originating in Outer space that survives an impact with the Earth 's surface EARTH was a short-lived Japanese vocal trio which released 6 singles and 1 album between 2000 and 2001 Events 350 - Generallus Magnentius deposes Roman Emperor Constans and proclaims himself Emperor 2000 ( MM) was a Leap year that started on Saturday of the Common Era, in accordance with the Gregorian calendar. Tagish Lake is a Lake in the Yukon Territory and northern British Columbia, Canada. Yukon (ˈjuːkɒn is the westernmost and smallest of Canada's three territories. British Columbia (ˌbrɪtɨʃ kəˈlʌmbiə ( BC) ( (la Colombie-Britannique C Country to "Dominion of Canada" or "Canadian Federation" or anything else please read the Talk Page Post-event atmospheric photographs, also yielded the meteor trajectory. Most of the stony, carbonaceous fragments landed on the Taku Arm of the lake, becoming encased in ice as they entered the lake's frozen surface. A carbonaceous chondrite or a C-type chondrite is a type of chondritic Meteorite which contains high levels of Water and Organic compounds As the meteorite fell to Earth, it set off a wide array of satellite sensors, as well as seismographs. This article is about artificial satellites For natural satellites also known as moons see Natural satellite. Seismometers (from Greek Seism - "the shakes" - and Metro - "I measure" are instruments that measure and record motions of the ground including
The pieces of the Tagish Lake meteorite were all deep red in colour and barely over one kg in size. The fragments were transported in their frozen state to research facilities after they were pried from the lake's icy top layer. They were collected by researchers from the University of Calgary and University of Western Ontario, and were studied in collaboration with researchers from NASA. The University of Calgary is a research-intensive Public university in Calgary Alberta, Canada. The University of Western Ontario (known as Western, as well as UWO or Western Ontario) is a public research University located in London The National Aeronautics and Space Administration ( NASA, ˈnæsə is an agency of the United States government, responsible for the nation's public space program The meteorite is currently held in the collection at the University of Alberta. The University of Alberta (U of A is a public research University located in Edmonton, Alberta, Canada.
Analyses have shown that they are of a primitive age, containing unchanged stellar dust granules that may have been part of the cloud of material that created our solar system and Sun. The Solar System consists of the Sun and those celestial objects bound to it by Gravity. The Sun (Sol is the Star at the center of the Solar System. The meteorite has proven to have come from the outer limits of the asteroid belt in our solar system. The asteroid belt is the region of the Solar System located roughly between the orbits of the Planets Mars and Jupiter. The Tagish Lake meteorite, before it impacted, was estimated at 4 metres in diameter and 56 tonnes in weight. This article is about the tonne or metric ton For other tons see Ton. However, when the fragments of the massive lump of rock were found, only 1. In Geology, rock is a naturally occurring aggregate of Minerals and/or Mineraloids The Earth's outer solid layer the ‘ Lithosphere 3 tonnes remained, meaning that around 97% of the meteorite had vaporised on its descent, during which the meteor finally exploded with around 1. 7 kilotons of energy. Units of mass There are three similar units of Mass called the ton: Long ton (simply ton in countries such as the United Of these 1. 3 tonnes of fragmented rock, only 0. 1% was found and collected.
Based on eye-witness accounts of the fireball caused by the incoming meteorite and on the photographs of the track, which it had left behind and which was visible for about half an hour, scientists have managed to calculate the orbit it followed before it impacted with Earth. Unfortunately, none of the photographs captured the fireball directly. Although both eye-witness evidence and photographs of the track are usually not very accurate, it was found that the Tagish Lake meteorite had a pre-entry orbit that brought it from the outer reaches of the Asteroid Belt. In Physics, an orbit is the gravitationally curved path of one object around a point or another body for example the gravitational orbit of a planet around a star The asteroid belt is the region of the Solar System located roughly between the orbits of the Planets Mars and Jupiter. Currently, there are only six meteorites with accurately determined pre-entry orbits, based on photographs or video recordings of the fireball itself taken from two or more different angles.
References
- Universe: The Definitive Visual Dictionary, Robert Dinwiddie, DK Adult Publishing, (2005), pg. Universe is a 512-page non-fiction book by nine British co-authors (listed alphabetically below with a short Foreword by Sir Martin Rees, first published in 2005 222.
- Mittlefehldt, D. W. , (2002), Geochemistry of the ungrouped carbonaceous chondrite Tagish Lake, the anomalous CM chondrite Bells, and comparison with CI and CM chondrites, Meteoritics and Planetary Science 37: 703-712. See summary of the article.
- Mittlefehldt, D. W. (Dec. , 2002) Tagish Lake-A Meteorite From the Far Reaches of the Asteroid Belt. Planetary Science Research Discoveries. http://www.psrd.hawaii.edu/Dec02/TagishLake.html
External links
- Tagish Lake meteorite may have held early forms of life, believe scientists
- Ancient rock star finds a home at the University of Alberta
- Researchers' website
- The Geological Society; Article/Analysis
- Brief Abstract
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