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Essay Galaxy - 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 tha....
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Number Of Pages: 2 |
Number Of Words: 464 |
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