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 »

www.reference.com 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 »

www.reference.com 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 »

www.reference.com 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 »

www.reference.com 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 »

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 »

www.reference.com Science Astronomy Planets

Venus has a surface temperature of 900 degrees Fahrenheit, and its skies are covered in thick clouds of sulfuric acid droplets. Venus spins in the opposite direction of all the other planets. This means that the sun rise... More »

www.reference.com Science Astronomy Planets