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A meteoroid (/ ˈ m iː t i ə r ɔɪ d / MEE-tee-ə-royd) [1] is a small rocky or metallic body in outer space. Meteoroids are distinguished as objects significantly smaller than asteroids , ranging in size from grains to objects up to 1 m (3 ft 3 in) wide. [ 2 ]
The visible passage of a glowing meteoroid, micrometeoroid, comet, or asteroid through the Earth's atmosphere, usually as a long streak of light produced when such an object is heated to incandescence by collisions with air molecules in the upper atmosphere, leaving an ionization trail as a result of its rapid motion and sometimes also shedding ...
Electrophonic bolide – a meteoroid which produces a measurable discharge of electromagnetic energy during its passage through the atmosphere. Enstatite achondrite – a meteorite that is mostly composed of enstatite. Usually part of the aubrite group. Enstatite chondrite – a rare form of meteorite thought to comprise only 2% of chondrites.
Using artificial intelligence, scientists have discovered a crater from a meteoroid that they say shook material as deep as the Red Planet’s mantle: the layer between its crust and its core. The ...
Comet Encke's meteoroid trail is the diagonal red glow. Meteoroid trail between fragments of Comet 73P. A meteor shower results from an interaction between a planet, such as Earth, and streams of debris from a comet (or occasionally an asteroid). Comets can produce debris by water vapor drag, as demonstrated by Fred Whipple in 1951, [24] and by ...
Only about 6% of meteorites are iron meteorites or a blend of rock and metal, the stony-iron meteorites. Modern classification of meteorites is complex. The review paper of Krot et al. (2007) [17] summarizes modern meteorite taxonomy. About 86% of the meteorites are chondrites, [18] [19] [20] which are named for the small, round particles they ...
Meteoritics [note 1] is the science that deals with meteors, meteorites, and meteoroids. [note 2] [2] [3] It is closely connected to cosmochemistry, mineralogy and geochemistry.
An Earth-grazing fireball is a rarely measured kind of fireball [8] caused by a meteoroid that collides with the Earth but survives the collision by passing through, and exiting, the atmosphere. As of 2008 [update] four grazers have been scientifically observed.