Mercury
Mercury is the closest planet to the sun as possible. They appear in the sky, not far from the position of the sun. Thus, we observe Mercury at the time dusk or dawn. Mercury can be seen best when it is positioned farthest from the sun. Also, on occasion, We can see Mercury is. As it orbits the sun in front of the
Mercury's spin axis is almost perpendicular to the orbital plane around the sun. Mercury's rotation is very slow. It rotates once every three orbits around the sun every two orbits of Mercury is peculiar from other planets. The rotation is very slow. Mercury makes no atmosphere enveloped. As a result, Mercury's surface temperature has changed dramatically since the -183 to 427 ° C (the lowest temperature in the dark, and the highest temperature in the sun) Human spacecraft Mariner 10 in. surveying and mapping Mercury's surface for the first time in 2517, but because of its proximity to the Sun, it can mapping is only 45 percent of the total area.
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