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meteorite    音标拼音: [m'itiɔr,ɑɪt]
n. 陨星

陨星

meteorite
n 1: stony or metallic object that is the remains of a meteoroid
that has reached the earth's surface


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  • Meteorite - Wikipedia
    [1] 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 chemical interactions with the atmospheric gases cause it to heat up and radiate energy
  • How to Identify Meteorites With Pictures - Geology In
    To tell if a rock is a meteorite, start by examining its physical features and characteristics Many meteorites are magnetic due to their iron-nickel content, but there are non-magnetic meteorites as well, making pictures of these invaluable for identification
  • Meteors and Meteorites - NASA Science
    Scientists estimate that about 48 5 tons (44 tonnes or 44,000 kilograms) of meteoritic material falls on Earth each day Almost all the material is vaporized in Earth's atmosphere, leaving a bright trail fondly called "shooting stars " Several meteors per hour can usually be seen on any given night
  • Meteorite | Definition, Types, Identification, Facts | Britannica
    Meteorite, any fairly small natural object from interplanetary space—i e , a meteoroid—that survives its passage through Earth’s atmosphere and lands on the surface In modern usage the term is broadly applied to similar objects that land on the surface of other comparatively large bodies
  • Fireball sightings are surging across the US — heres whats really . . .
    With bright meteors sighted over Ohio, Texas, and Europe, you might wonder what's going on Is meteor activity really increasing, or is there just a surge in reporting? (Image credit: Left to
  • Meteorite Identification: Have you found a space rock?
    If you would like to learn more about meteorite identification, and discover how to perform some other simple tests at home, please visit The Aerolite Guide to Meteorite Identification Meteorites are very valuable both to the scientific community and to enthusiastic collectors
  • I think I found a meteorite. How can I tell for sure?
    Meteorites are fragments of rock or metal that fall to Earth from space They are very rare, but many people find unusual rocks or pieces of metal and wonder if they might have found a meteorite
  • 1-ton meteor streaks across Texas sky before breaking up in a fireball . . .
    A 1-ton meteor traveling at nearly 35,000 mph caused a fireball and a loud boom over Texas on Saturday as it broke into pieces while entering Earth's atmosphere
  • The UCLA Meteorite Museum - Home
    Our collection includes the main masses of about 40 meteorites and the type specimens of more than 300 meteorites collected from hot deserts; 60 of these are iron meteorites Eighty of these meteorite type specimens are from the state of California
  • Meteorite - National Geographic Society
    There, more than 50,000 years ago, a meteorite weighing about 270,000 metric tons (300,000 tons) slammed into Earth with the force of 2 5 million tons of TNT The impact blasted a hole one kilometer (0 6 miles) wide and about 230 meters (750 feet) deep





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