"Mars is the fourth planet from the Sun and the second-smallest planet in the Solar System, being larger than only Mercury. In English, Mars carries the name of the Roman god of war and is often referred to as the "Red Planet". The latter refers to the effect of the iron oxide prevalent on Mars's surface, which gives it a reddish appearance distinctive among the astronomical bodies visible to the naked eye. Mars is a terrestrial planet with a thin atmosphere, with surface features reminiscent of the impact craters of the Moon and the valleys, deserts and polar ice caps of Earth."(Wikipedia)
Gravity: 3.721 m/s² Orbital period: 687 days Length of day: 1d 0h 37m Distance from Sun: 141.6 million mi
Just as colors are made more dramatic in sunsets on Earth, Martian sunsets would appear bluish to human observers watching from the red planet. Fine dust makes the blue near the Sun's part of the sky much more prominent, while normal daylight makes the Red Planet's familiar rusty dust color more prominent.
The measurement suggests that the radius of the Martian core is 1,810 to 1,860 kilometres, roughly half that of Earth's. That's larger than some previous estimates, meaning the core is less dense than had been predicted.
Strong and relentless, the Martian winds are still changing the landforms of Mars today. Surface winds typically move about 16 to 32 kilometers (10 to 20 miles) per hour. The Viking Landers measured speeds of up to 113 kilometers (70 miles) per hour during dust storms.