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Mercury
Mercury's diameter is 3,100 miles.
Mercury's tilt of its axis is 0 degrees.
Mercury's mass is 1/16 of the Earth's.
Mercury's gravity on the suface is 2/5 th of the Earth's.
Mercury's period of rotation is 59 days.
Mercury's distance from the Sun 36.3 millon miles.
Mercury is the 2nd smallest planet.
Mercury is the closest planet to the Sun.
Mercury is mostly made of iron and nickel.
The Mariner 10 saw Mercury in 1973.
Mercury has no moons.
Mercury's period of revolution is 88 days.
Mercury's average temperature is 662ûF in the day, and 274û F in the night.