(meteorobs) Definition of a meteor (was Re: Fifth grade science book)
GeoZay at aol.com
GeoZay at aol.com
Wed Apr 27 13:43:07 EDT 2005
>>'meteorite' - a piece of solar system material that survives high-speed
entry
through earth's atmosphere, to actually reach earth's surface. May survive
whole, or it may reach the surface as fragments; may hit ocean or dry land.
Meteorites (impacts) are much rarer than meteors (flashes of light).
'meteoroid' - a piece of solar system material, orbiting the sun. May be a
"left-over" from the formation of the solar system, or a piece of debris
sloughed off by a comet (most common), or resulting from impact of solar
system
bodies with each other (rare). If it happens to intersect with Earth's orbit
and enter our atmosphere, it will produce a 'meteor'. It may also
OCCASIONALLY
produce a 'meteorite' - if it is large enough, dense enough, and slow enough.
Meteoroids range in size from microscopic, to many meters (yards) across. A
really LARGE (>100m), rocky 'meteoroid' is also known as an 'asteroid'. A
really TINY (<1mm or so) particle is called a 'micrometeoroid'.<<
What is the object called after a meteoroid has gone thru the meteor phase
and is into the dark phase of flight...and has yet to hit the ground? :O)
George Zay
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