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meteoroid    
n. 流星体

流星体

meteoroid
n 1: (astronomy) any of the small solid extraterrestrial bodies
that hits the earth's atmosphere [synonym: {meteoroid},
{meteor}]


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  • Meteoroid - Wikipedia
    The visible passage of a meteoroid, comet, or asteroid entering Earth's atmosphere is called a meteor, and a series of many meteors appearing seconds or minutes apart and appearing to originate from the same fixed point in the sky is called a meteor shower
  • Meteor spotted streaking above Texas responsible for sonic booms, NASA says
    A bright fireball that was spotted Saturday afternoon in the skies over southeastern Texas was a meteor that likely broke apart over the Houston area, according to NASA Eyewitness accounts in the
  • Meteors and Meteorites: Facts - NASA Science
    Meteoroids are space rocks that range in size from dust grains to small asteroids When meteoroids enter Earth’s atmosphere, or that of another planet, at high speed and burn up, they’re called meteors When you see lots if meteors, you’re watching a meteor shower
  • What’s the Difference Between a Meteoroid, a Meteor, and a Meteorite?
    Most meteoroids that enter the atmosphere burn up completely as meteors In some cases, however, the meteoroid does not completely burn up, and the object actually makes it to Earth’s surface The chunk that has survived its fiery journey is called a meteorite
  • Difference Between Meteoroids, Meteors, Meteorites, Comets, and Asteroids
    Meteoroids are rocky fragments of asteroids, comets, moons, and planetary collisions They are much smaller than asteroids, ranging in size from tiny grains up to a meter Smaller particles are called space dust or micrometeoroids
  • Know the Differences Between Meteors, Meteoroids, Meteorites, Comets . . .
    A meteoroid is a small piece of space debris that has come from larger bodies in space, such as comets, asteroids, other planets, and the Moon These pieces of debris are only called meteoroids when they're traveling through space—they become meteors when they burn up in our atmosphere, or meteorites if they make it through and hit Earth's
  • Meteoroid - National Geographic Society
    Meteoroids shed by a comet usually orbit together in a formation called a meteoroid stream A very small percentage of meteoroids are rocky pieces that break off from the moon and Mars after celestial bodies—often asteroids or other meteoroids— impact their surfaces
  • Meteors, meteorites and meteoroids explained - MSN
    First, definitions: it’s a meteoroid out in space When it enters our atmosphere, it’s a meteor, and if it doesn’t burn up and survives to hit the earth, it’s a meteorite…three names for
  • All About Meteors, Meteoroids, Fireballs, Meteorites
    These particles of space debris are collectively referred to as "meteoroids " Millions of meteoroids enter Earth's atmosphere every day They are believed to originate within our own solar system rather than from interstellar space
  • Meteoroids - an overview | ScienceDirect Topics
    A meteoroid is defined as a celestial body that ranges in size from 100 micrometers to 10 meters, with a mass that can vary significantly depending on its composition and structure It primarily originates from comets or asteroids, and occasionally includes material from planetary bodies





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