The planet is named after the Roman god of war, for the reason that its color is very similar to the color of blood. Scientists suggest that the red color is associated with the presence of iron oxides in the atmosphere. Mars is the seventh largest planet in our solar system. Interesting fact, Mars has mountains, which are higher than Mount Everest. Here is Mount Olympus, the highest known mountain in the solar system. It is interesting that Mars claims has the largest volcanoes in the solar system. The average temperature on Mars is about -60 ° C. One year on Mars is 687 Earth days. Just like Earth, Mars rotates on its axis from west to east. Interesting fact, the Martian day is 24 hours, 39 minutes and 35 seconds, which is very close to the earth. Mars has two small moons - Phobos and Deimos. Mars was first visited by Mariner 4 in 1965.