A planet that is much smaller than the Earth (only 0.107 of its mass).
The atmosphere of Mars mainly contains carbon dioxide.
There are volcanoes on the surface of the planet, the most famous of which is Olympus. It has a height of about 27 km, and a width of about 520 km, which exceeds all possible earthly analogues. The rift depressions of Mars testify to geological activity that ended about 2 million years ago.
The bright red color of the planet is due to the high content of iron oxide in its soil.
