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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
    Meteorites have traditionally been divided into three broad categories: stony meteorites that are rocks, mainly composed of silicate minerals; iron meteorites that are largely composed of ferronickel; and stony-iron meteorites that contain large amounts of both metallic and rocky material
  • A Rare Meteorite Found in the Sahara Desert Offers Evidence of a Lost . . .
    A slice of the rare angrite meteorite NWA 12774 shows olivine crystal (green), a mineral rich in magnesium John Kashuba A 4 5-billion-year-old meteorite found in the Sahara Desert could be
  • 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
  • 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
  • Meteorite heard in Massachusetts landed right in the middle of Cape . . .
    The meteorite that caused a sonic boom heard throughout Massachusetts on Saturday landed "right in the middle of Cape Cod Bay," NASA researchers say
  • 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
  • NASA confirms meteorite landed in Cape Cod Bay after sonic boom
    NASA says the meteorite responsible for Saturday's sonic boom landed squarely in the middle of Cape Cod Bay
  • About Meteorites
    There are over 45 different types of meteorite, but they can be broadly categorized into stony meteorites, iron meteorites, and stony-iron meteorites based on their general composition
  • Types of Meteorites: Iron, Stone, Stony-Iron, Lunar, Martian
    There are several different types of meteorites! Learn about them in this article by Geoffrey Notkin, meteorite hunter
  • 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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