Mars is named for the Roman god of war. The ancient Greeks also named the planet after their god of war, Ares. Mars contains frozen water, and this water once flowed on the planet. More » Science Astronomy Planets

Mars is 142 million miles from the Sun and takes 687 Earth days to complete one orbit around the sun, according to the National Aeronautics and Space Administration. The average surface temperature on Mars is -81 degrees... More » Science Astronomy Planets

NASA's primary mission for Mars is the search for life and elements, such as water, that could support life. NASA got its first close-range pictures of Mars in 1965. As of 2015, robot vehicles continue to send valuable i... More » Science Astronomy Planets
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The surface temperature on Mars ranges from minus 225 degrees Fahrenheit to 70 degrees Fahrenheit. The average temperature is minus 81 F, which is much colder than the average Earth temperature of 57 F. More » Science Astronomy Planets

According to, Mars has a diameter of 6,794 kilometers or 4,222 miles. Universe Today says this is approximately 53 percent of Earth’s diameter. Next to Mars, Mercury is the smallest planet in the solar system w... More » Science Astronomy Planets

Mars is the fourth planet from the sun. Its average distance from the sun is 141,633,120 miles, approximately 1.5 times that of Earth. More » Science Astronomy Planets

Mars, the fourth planet from the sun, has interested people for thousands of years, according to BBC News. However, whereas the people of ancient Greece and Rome found Mars fascinating for its red color, people today are... More » Science Astronomy Planets