Mars is the God of war. Mars Is located In between Earth and Venus. Its mass is 6.42 x 10^23.Mars has a diameter of 6787 km and its mean density is (kg/m^3) 3490 Escape velocity on Mars is 5000 (m/sec). Mars average distance from the sun is (AU) 1.524Mars Rotation period is 1.026. It takes Mars 686.98 days to make a Mars' year. Her tilt on her axis or Obliquity is 25 degrees. Mars' orbit inclination is 1.85 degrees. Her orbit eccentricity (deviation from circular) is 0.93 and her maximum surface temperature is 310k. Her minimum surface temperature is 150k. Mars' albedo or visual geometric reflectivity is 0.15. The highest point on mars is Olympus mons (about 24 km above surrounding lava plains). Her atmospheric components consist of 95% of carbon dioxide, 3% nitrogen, and 1.6% argon. Surface materials on Mars consists of basalt, rock, and altered materials. Martian Meteorite was found in 1979, and is believed to come from mars 180 years ago. The south pole on Mars is composed of water and carbon dioxide ice. The ice on mars may look red due to the sand that is frozen into the ice. Many people say that there may be life on mars but no proof has been found. The first spacecraft on Mars was the Mariner 4 in 1965. Many have followed. Mars is the favorite science fiction theme to many writers. Mars has

two satellites. They are both moons. One is called Phobos the other is called Deimos. Phobos is 9 km from Mars and has a radius of 11 km. Its mass is 1.08e16 . Phobos was discovered in 1877 by a man named Hall. Deimos is 23 km from Mars and is 6 km in radius. It also was discovered by Hall in 1977.