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Mercury

TitleMercury
# of Words429
# of Pages (250 words per page double spaced)1.72

Mercury



Mercury


     Mercury is the closest planet to the sun.  It’s average distance from
the sun is approximately fifty-eight million km and it’s diameter is 4875 km,
making it the second smallest planet in our solar system.  It’s volume and mass
are about 1/18 that of the earth and it’s average density is approximately equal
to that of the earth.  Mercury’s magnetic field is one-hundred times weaker than
that of Earth’s.  Mercury has the shortest revolution of all the planets in our
solar system and revolves around the sun in about eighty-eight days.  Radar
observations of the planet show that its period of rotation is 58.7 days, or
two-thirds of its period of revolution.  That means that Mercury has one and
one-half days in it’s year.
     Mercury doesn’t have an atmosphere, but it does have a thin layer of
helium.  The helium is actually solar wind that is trapped by Mercury’s weak
gravity.  Scientists think that collisions with protoplanets early in the
history of the solar system may have stripped away lighter materials, making
Mercury a very dense planet with an iron core extending outwards 4/5 of the way
to the surface.
     Mercury bares a very similar resemblance to our moon because it has a
lot of craters.  The craters, which cover seventy-five percent of Mercury’s
surface, were formed by huge rocks ...This is ONLY a preview of the article. If you would like to view the entire document, you must subscribe to Electronic References. Please register below now!

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