Open main menu
Home
Random
Recent changes
Special pages
Community portal
Preferences
About Wikipedia
Disclaimers
Incubator escapee wiki
Search
User menu
Talk
Dark mode
Contributions
Create account
Log in
Editing
Meteoroid
(section)
Warning:
You are not logged in. Your IP address will be publicly visible if you make any edits. If you
log in
or
create an account
, your edits will be attributed to your username, along with other benefits.
Anti-spam check. Do
not
fill this in!
== Meteorites == {{Main|Meteorite}} [[File:Murnpeowie meteorite.jpg|thumb|Murnpeowie [[meteorite]], an [[iron meteorite]] with [[wikt:regmaglypt|regmaglypts]] resembling thumbprints (Australia, 1910)]] A meteorite is a portion of a meteoroid or asteroid that survives its passage through the atmosphere and hits the ground without being destroyed.<ref>''The Oxford Illustrated Dictionary''. 1976. Second Edition. Oxford University Press. p. 533</ref> Meteorites are sometimes, but not always, found in association with hypervelocity [[impact crater]]s; during energetic collisions, the entire impactor may be vaporized, leaving no meteorites. [[Geologist]]s use the term, "bolide", in a different sense from [[astronomer]]s to indicate a very large [[impact event|impactor]]. For example, the [[United States Geological Survey|USGS]] uses the term to mean a generic large crater-forming projectile in a manner "to imply that we do not know the precise nature of the impacting body ... whether it is a rocky or metallic asteroid, or an icy comet for example".<ref>{{cite web |url=https://woodshole.er.usgs.gov/epubs/bolide/introduction.html |title=What is a Bolide? |publisher=woodshole.er.usgs.gov |access-date=2011-09-16}}</ref> Meteoroids also hit other bodies in the Solar System. On such stony bodies as the [[Moon]] or [[Mars]] that have little or no atmosphere, they leave enduring craters. === Impact craters === {{Main|Impact crater}} Meteoroid collisions with solid Solar System objects, including the Moon, [[mercury (planet)|Mercury]], [[Callisto (moon)|Callisto]], [[Ganymede (moon)|Ganymede]], and most small moons and [[asteroid]]s, create impact craters, which are the dominant geographic features of many of those objects. On other planets and moons with active surface geological processes, such as Earth, [[Venus]], [[Mars]], [[Europa (moon)|Europa]], [[io (moon)|Io]], and [[Titan (moon)|Titan]], visible impact craters may become [[erosion|eroded]], buried, or transformed by [[tectonics]] over time. In early literature, before the significance of impact cratering was widely recognised, the terms [[cryptoexplosion]] or cryptovolcanic structure were often used to describe what are now recognised as impact-related features on Earth.<ref>{{cite web |last1=French |first1=Bevan M. |author-link=Traces of Catastrophe |year=1998 |url=http://www.lpi.usra.edu/publications/books/CB-954/CB-954.intro.html |title=Traces of Catastrophe: A Handbook of Shock-Metamorphic Effects in Terrestrial Meteorite Impact Structures |location=Washington, DC |publisher=[[Smithsonian Institution]] |page=97}}</ref> Molten terrestrial material ejected from a meteorite impact crater can cool and solidify into an object known as a [[tektite]]. These are often mistaken for meteorites. Terrestrial rock, sometimes with pieces of the original meteorite, created or modified by an impact of a meteorite is called [[impactite]]. === Gallery of meteorites === <gallery class="center" mode="packed" heights="140px"> File:Two tektites.JPG|Two [[tektite]]s, molten terrestrial ejecta from a [[meteorite impact]] File:Esquel pallasite partial slice.jpg|A partial slice of the [[Esquel (meteorite)|Esquel pallasite]] Image:Willamette Meteorite AMNH.jpg|[[Willamette Meteorite]], from Oregon, US Image:Meteorite Lapham.jpg|Meteorite, which fell in [[Wisconsin]] in 1868 Image:Meteorito Marília.jpg|[[Marília (meteorite)|Marília Meteorite]], a [[chondrite]] H4, which fell in [[Marília]], Brazil (1971) File:Mesa-Arizona Museum of Natural History-Tucson Meteorite.JPG|Children posing behind a replica of the [[Tucson Ring meteorite|Tucson Meteorite]] at the [[Arizona Museum of Natural History]]<ref>{{cite web |url=https://www.arizonamuseumofnaturalhistory.org/explore-the-museum/exhibitions/arizona-through-time |title=Arizona Through Time |website=[[Arizona Museum of Natural History]] |access-date=2024-09-03}}</ref> File:Meteorite Tindouf NWA 869.jpg|Meteorite with [[breccia]]tion and [[carbon]] inclusions from [[Tindouf]], Algeria<ref>{{cite web|url=http://www.lpi.usra.edu/meteor/metbull.php?code=31890|title=Northwest Africa 869|publisher=The Meteoritical Society|work=Meteoritical Bulletin Database}}</ref> </gallery>
Edit summary
(Briefly describe your changes)
By publishing changes, you agree to the
Terms of Use
, and you irrevocably agree to release your contribution under the
CC BY-SA 4.0 License
and the
GFDL
. You agree that a hyperlink or URL is sufficient attribution under the Creative Commons license.
Cancel
Editing help
(opens in new window)