Comets, Meteors, and Impact
at night we see the fiery flashes of
incoming space debris burning in our
atmosphere. What are these
shooting stars, and do they ever
land on our world?
stars are pieces of matter left over
from the formation of our solar
system. They are still floating
around in space, following their own
orbits (even a grain of dust can have an
orbit!), bumping into each other, and
esponding to the gravitational
attraction of other pieces of rock and
ice. When they come near the
earth, earth's gravitational field
attracts them, and may pull them into
objects are classified in various
ways. One way is by size:
and meteors are
. Meteorites burn up in out
atmosphere ??? and meteors are large
enough to hit the ground
factors are speed and composition.
are made of rocks and dust various kinds of
ice, including water ice.
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