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  2. Meteoroid - Wikipedia

    en.wikipedia.org/wiki/Meteoroid

    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] Objects smaller than meteoroids are classified as micrometeoroids or space dust.

  3. Comet dust - Wikipedia

    en.wikipedia.org/wiki/Comet_dust

    Meteoroids are 30 micrometers to 1 meter, dust is smaller, and the term "micrometeoroid" is discouraged (though not micrometeorite). [31] The IMO noted the new definition, [32] but still displays a prior definition on their site. [33] The Meteoritical Society site retains its prior definition, 0.001 cm. [34] The AMS has posted no rigorous ...

  4. Micrometeoroid - Wikipedia

    en.wikipedia.org/wiki/Micrometeoroid

    A micrometeoroid is a tiny meteoroid: a small particle of rock in space, usually weighing less than a gram. A micrometeorite is such a particle that survives passage through Earth's atmosphere and reaches Earth's surface. The term "micrometeoroid" was officially deprecated by the IAU in 2017, as redundant to meteoroid. [1]

  5. Glossary of meteoritics - Wikipedia

    en.wikipedia.org/wiki/Glossary_of_meteoritics

    Stony-iron meteorite – a meteorite that is a mixture of meteoric iron and silicates. Strewn field – a field of fragments from one meteorite fall. Structural class – a subdivision of iron meteorites in ataxites , hexahedrites and octahedrites .

  6. Meteorite - Wikipedia

    en.wikipedia.org/wiki/Meteorite

    A "meteorite fall", also called an "observed fall", is a meteorite collected after its arrival was observed by people or automated devices. Any other meteorite is called a "meteorite find". [ 43 ] [ 44 ] There are more than 1,100 documented falls listed in widely used databases, [ 45 ] [ 46 ] [ 47 ] most of which have specimens in modern ...

  7. Meteoritics - Wikipedia

    en.wikipedia.org/wiki/Meteoritics

    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.

  8. Micrometeorite - Wikipedia

    en.wikipedia.org/wiki/Micrometeorite

    A micrometeorite is a micrometeoroid that has survived entry through the Earth's atmosphere.Usually found on Earth's surface, micrometeorites differ from meteorites in that they are smaller in size, more abundant, and different in composition.

  9. Near-Earth object - Wikipedia

    en.wikipedia.org/wiki/Near-Earth_object

    Near-Earth objects are classified as meteoroids, asteroids, or comets depending on size, composition, and orbit. Those which are asteroids can additionally be members of an asteroid family, and comets create meteoroid streams that can generate meteor showers.