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  1. Meteoroids are small, natural particles made of ice or rock that are ejected from comets and asteroids.

    Meteoroid Environment - NASA

    sma.nasa.gov/sma-disciplines/meteoroid-environm…
    A meteoroid is a piece of stony or metallic debris which travels in outer space. Meteoroids travel around the Sun in a variety of orbits and at various speeds.

    StarChild: Meteoroids - NASA

    starchild.gsfc.nasa.gov/docs/StarChild/solar_syste…
    Meteoroids are space rocks that range in size from dust grains to small asteroids.

    Meteors & Meteorites Facts - Science@N…

    science.nasa.gov/solar-system/meteors-meteorites…
    An asteroid is a small rocky object that orbits the Sun. A meteor is what happens when a small piece of an asteroid or comet, called a meteoroid, burns up upon entering Earth’s atmosphere.

    Asteroid or Meteor: What's the Differenc…

    spaceplace.nasa.gov/asteroid-or-meteor/en/
    NASA’s Meteoroid Environment Office (MEO) is the NASA organization responsible for meteoroid environments pertaining to spacecraft engineering and operations.

    Meteoroid Environment Office - NASA

    www.nasa.gov/meteoroid-environment-office/
  2. OSMA
    https://sma.nasa.gov/sma-disciplines/meteoroid-environments

    Meteoroid Environment - NASA

    • The Leonid Meteor Storms

      Meteoroid Environment. Meteoroids are small, natural particles made of ice or …

    • The Chelyabinsk Fireball

      Meteoroid Environment. Meteoroids are small, natural particles made of ice or …

    • Meteors and Meteorites

      Meteors, and meteorites are often called “shooting stars” - bright lights streaking …

    • Overview

      Understanding the meteoroid environment can help spacecraft designers to better …

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  4. Science Mission Directorate
    https://science.nasa.gov/solar-system/…

    Meteors & Meteorites Facts - Science@NASA

    Scientists can tell where meteorites originate based on several lines of evidence. They can use photographic observations of meteorite falls to calculate orbits and project their paths back to the asteroid belt. They can also compare …

    标记:
    Science
    Asteroid
  5. Science Mission Directorate
    https://science.nasa.gov/solar-system/…

    Meteors and Meteorites - NASA Science

    Meteors, and meteorites are often called “shooting stars” - bright lights streaking across the sky. But we call the same objects by different names, depending on where they are located.

    标记:
    NASA
    Science

  6. Meteoroid NASA 的视频

    bing.com/videos
  7. NASA
    https://www.nasa.gov/meteoroid-environment-office/overview

    Overview - NASA

    标记:
    NASA
    Meteoroid Environment
  8. NASA
    https://www.nasa.gov/meteoroid-environment-office

    Meteoroid Environment Office - NASA

    标记:
    Nasa Meteoroid Environment Office
    Microsoft Office

  9. Meteoroid NASA的图片

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  10. Science Mission Directorate
    https://science.nasa.gov/solar-system/…

    Meteors and Meteorites: Exploration - NASA Science

    The United States does not have radar dedicated to finding meteors, but camera networks can look for streaks of light in the sky and calculate their speeds and trajectories. NASA has a network of 17 cameras called the NASA All Sky …

    标记:
    NASA
    Exploration
  11. nasa.gov
    https://starchild.gsfc.nasa.gov/.../mete…

    StarChild: Meteoroids - NASA

    A meteoroid is a piece of stony or metallic debris which travels in outer space. Meteoroids travel around the Sun in a variety of orbits and at various speeds. The fastest meteoroids move at about 42 kilometers per second.

    标记:
    Meteors and Meteoroids
    Meteoroid in Space
    Meteoroids Nasa
    Outer Space
  12. NASA Space Place
    https://spaceplace.nasa.gov/asteroid-o…

    Asteroid or Meteor: What's the Difference? - NASA …

    2024年11月8日 · A meteor is what happens when a meteoroid – a small piece of an asteroid or comet – burns up upon entering Earth’s atmosphere, creating a streak of light in the sky. An asteroid is a small rocky object that orbits the Sun.

    标记:
    Difference
    Meteoroid
  13. NASA Solar System Exploration
    https://solarsystem.nasa.gov/asteroids-comets-and...

    In Depth | Perseids – NASA Solar System Exploration

    标记:
    In Depth
    Perseids
  14. NASA
    https://www.nasa.gov/directorates/smd/…

    What’s the Difference Between Asteroids, Comets and …

    2021年12月13日 · A meteoroid is a small piece of asteroid or a comet, typically pebble-sized, but could be a little smaller or a little larger, and often created from a collision. When a meteoroid gets close to the Earth and enters the Earth’s …

    标记:
    Difference
    Scientist