| The meteoroid exploded in a flash of light, and the cloud trail that it left behind stretched across the sky. |
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| In that narrower meaning, meteoroid is usually linked with the terms meteor, meteorite, or both. |
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| How and where might astronauts create a habitat on Mars which would give them some protection from meteoroid impacts? |
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| A fragment of a meteoroid which survives entry into the Earth's atmosphere is called a meteorite. |
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| An extremely bright meteoroid larger than a few centimetres in diameter entering our atmosphere is rare and is called a fireball. |
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| If a meteoroid is large enough or dense enough, it will survive its journey through the atmosphere and will reach the Earth as a meteorite. |
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| Whether a meteoroid makes it to Earth's surface or not depends on many factors including the mass, initial velocity, angle of entry, composition, and shape of the body. |
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| The unprecedented data obtained as the result of the airburst of a meteoroid over the Russian city of Chelyabinsk on Feb. |
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| Unlike the Earth, the lunar surface is susceptible to meteoroid attack as the moon's surface lacks the protective atmospheric layer. |
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| Once the meteoroid enters the Earth's atmosphere, we call it a meteorite. |
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| A meteoroid is much like an asteroid, its only distinction being size. |
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| The meteoroid was traveling around 56,000 miles per hour when it slammed into the moon's surface. |
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| This allowed us to get our first double station meteors, which is the key point towards the computation of orbits, and hence the derivation of the origin of meteoroid stream. |
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| The explosion on March 17 was the biggest seen since NASA began watching the moon for meteoroid impacts about eight years ago. |
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| A meteor appears when a particle or chunk of metallic or stony matter called a meteoroid enters the earth''s atmosphere from outer space. |
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| Another type of large astronomical explosion occurs when a very large meteoroid or an asteroid impacts the surface of another object, such as a planet. |
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| Bill Cooke, Meteoroid Environment Office lead, NASA's Marshall Space Flight Center, Huntsville, Ala. |
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