Best known and best preserved Crater formed by high-speed impact of a meteoroid, asteroid, or comet on a solid surface. Craters are a common feature on most moons (an exception is Io), asteroids, and rocky planets, and range in size from a few cm to over 1,000 km across. There is a general morphological progression Click on Term to Read More on Earth. The Bowl-like depression ("crater" means "cup" in Latin) on the surface of a planet, moon, or asteroid. Craters range in size from a few centimeters to over 1,000 km across, and are mostly caused by impact or by volcanic activity, though some are due to cryovolcanism. Click on Term to Read More is named after Daniel Barringer and still owned by his family and also known as How long Sonic booms Of the several 10s of tons of cosmic material entering Earth's atmosphere each day, only about one ton reaches the surface. An object's chance of survival depends on its initial mass, speed and angle of entry, and friability (tendency to break up). Micrometeoroids radiate heat so Click on Term to Read More Crater, Coon Butte, and Canyon Diablo (www.barringercrater.com). Measuring 1.2 km across and 175 m deep, with a rim 45 m higher on average than the surrounding plain, it lies 55 km east of Flagstaff, Arizona, at 35° 02′ N, 111° 01′ W. It was formed ~50,000 years ago by the impact of an Meteorite composed mainly of iron (Fe) and nickel (Ni) in the form of two alloys, kamacite and taenite. Due to their metallic makeup and extraordinary weight, iron meteorites are easily distinguished from ordinary rocks. Also, because they rarely break up in the air and suffer much less from the effects Click on Term to Read More ~50 m across and weighing several hundred thousand metric tons. Most of the Work in progress. A solid natural object reaching a planet’s surface from interplanetary space. Solid portion of a meteoroid that survives its fall to Earth, or some other body. Meteorites are classified as stony meteorites, iron meteorites, and stony-iron meteorites. These groups are further divided according to their mineralogy and Click on Term to Read More vaporized or melted upon impact, leaving only numerous, mostly small fragments of an iron meteorite now called Canyon Diablo, scattered up to 7 km from the impact site. Only ~30 t, including a 693-kg sample, are known to have been recovered.
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