The motion of meteoroids can be severely perturbed by the gravitational fields of major planets. Jupiter's gravitational influence is capable of reshaping an asteroid's orbit from the main belt so that it dives into the inner solar system and crosses the orbit of Earth.
www.solarviews.com/eng/meteor.htm
Most meteoroids are no bigger than a pebble. Large meteoroids are believed to come from the asteroid belt. Some of the smaller meteoroids may have come from the Moon or Mars. If a meteoroid falls into the Earth's atmosphere, it will begin to heat up and start to glow.
starchild.gsfc.nasa.gov/docs/StarChild/solar_system_lev... starchild.gsfc.nasa.gov/docs/StarChild/solar_system_level1/meteoroids.html
Meteoroids burn up in the atmosphere and fall to the Earth as dust. Every day, approximately 3000 metric tons of dusty space material falls to Earth. ... Meteoroids travel around the Sun in a variety of orbits and at various speeds. The fastest meteoroids move at about 42 kilometers per second. Most meteoroids are about...
starchild.gsfc.nasa.gov/docs/StarChild/solar_system_lev... starchild.gsfc.nasa.gov/docs/StarChild/solar_system_level2/meteoroids.html
METEOROIDS; Meteoroids are small bodies that travel through space. Meteoroids are smaller than asteroids; most are smaller than the size of a pebble. Meteoroids have many sources. Most meteoroids come from asteroids that are broken apart by impacts with other asteroids.
www.enchantedlearning.com/subjects/astronomy/meteor/met... www.enchantedlearning.com/subjects/astronomy/meteor/meteoroid.shtml
Meteoroid - Wikipedia, the free encyclopedia
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A meteoroid is a sand to boulder-sized particle of debris in the Solar System. The visible path of a meteoroid that enters Earth's (or another body's) atmosphere is called a meteor . If a mete...
en.wikipedia.org/wiki/Meteoroid
The bright trails as they are coming through the Earth's atmosphere are termed meteors, and these chunks as they are hurtling through space are called meteoroids. Large pieces that do not vaporize completely and reach the surface of the Earth are termed meteorites.
solarsystem.nasa.gov/planets/profile.cfm?Object=Meteors solarsystem.nasa.gov/planets/profile.cfm?Object=Meteors
Shooting stars or meteors are bits of material falling through Earth's atmosphere; they are heated to incandescence by the friction of the air. ... The bright trails as they are coming through the Earth's atmosphere are termed meteors, and these chunks as they are hurtling through space are called meteoroids.
space.about.com/od/meteoroids/a/meteoroidsinfo.htm space.about.com/od/meteoroids/a/meteoroidsinfo.htm
On impact, large meteoroids leave craters and may bury themselves deep underground. Meteorites of any size can be quite valuable. ... Gather the various pebbles; they will be the "meteoroids."
cse.ssl.berkeley.edu/AtHomeAstronomy/activity_05.html
A very large number of meteoroids enter the Earth's atmosphere each day amounting to more than a hundred tons of material. But they are almost all very small, just a few milligrams each. Only the largest ones ever reach the surface to become meteorites.
www.nineplanets.org/meteorites.html www.nineplanets.org/meteorites.html
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