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Mars is called the Red Planet because of the rusty dust that makes it appear red. Oxides of iron are in the dust and rust is created from oxides. That's why it appears red and we call it the Red Planet

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Some geological features of sand dunes, possible ancient rivers, craters,  layers, glaciers, and many more features we have yet to discover.

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Mars orbits 687 Earth days. It spins about 40 minutes slower than Earth. It's rotation is 24 hours, 39 minutes, and 25 seconds in solar days (time from sunrise to sunset).

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NASA is soon wanting to send people to Mars. So far we have had 10+ spacecrafts that have set out to bring back information about Mars.

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Mars is 1.52 AU away from the sun. It is the forth planet from the sun, and is behind the Earth. We know the planet is rocky and solid, possible for a space mission.

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On Mars farther away from the equator it can get down to -195 degrees F. Near the equator on a summer day in can be as hot as 70 degrees F, then at night plummeting to -100 degrees F.

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https://solarsystem.nasa.gov/planets/mars
http://www.space.com/16907-what-is-the-temperature-of-mars.html
https://solarsystem.nasa.gov
https://en.wikipedia.org/wiki/Mars_(mythology)
https://www.google.com/
https://www.universetoday.com/14889/mars-rotation/
monoku-annemonoku-anne.tumblr.com
planetfacts.org/mass-and-density-of-mars/
Answers.com

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Mars is associated with the Greek God Ares. It's a symbol of war and agriculture.

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Mars is cold and desert like. Like Earth, Mars has weather, volcanoes, canyons, etc. Scientists think at one point there was water on Mars, not for long though. Mars's atmosphere is so thin liquid doesn't last on the red planet.

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As the second smallest planet in our solar system, the mass of Mars is  7.08 x 1020 tons.  Mars has a total density of 3.933 grams/cubic centimeter. Mars's diameter is 6,792 kilometers.

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Mars's atmosphere is 100 times thinner than Earth's.  Made out of mostly carbon dioxide, this planet is dusty. All the dust causes constant dust storms, some of the biggest in the solar system. Mars has two moons, Phobos and Deimos. They are the smallest moons in the solar system.