Meteorite
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A meteorite is a rock that originated in outer space and has fallen to the surface of a planet or moon. When the original object enters the atmosphere, various factors such as friction, pressure, and
The 60-tonne (66-short-ton; 130,000-pound), 2.7 m (8 ft 10 in) Hoba meteorite in Namibia is the largest known intact meteorite.
NWA 859 iron meteorite showing effects of atmospheric ablation
The impact pit made by a 61.9 grams (2.18 ounces) Novato meteorite when it hit the roof of a house on 17 October 2012.
Meteorite SPMN170422 shows how far atmospheric ablation can erode.
Chondrule
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A chondrule is a round grain found in a chondrite. Chondrules form as molten or partially molten droplets in space before being accreted to their parent asteroids. Because chondrites represent one of
Meteorite
…modern meteorite taxonomy. About 86% of the meteorites are chondrites, which are named for the small, round particles they contain. These particles, or chondrules, are composed mostly of silicate minerals that appear to have been melted while they were free-floating objects in space. Certain types of chondrites…
Chondrules in the chondrite classification Grassland. A millimeter scale is shown.
Chondrules in the Carbonaceous Chondrite NWA 13887
Chondrules in a thin section of ordinary chondrite observed under polarized light/analyzed.
Glassy chondrule