Mars is home to the tallest mountain in the solar system Olympus Mons, a shield volcano, is 21km high and 600km in diameter. Despite having formed over billions of years, evidence from volcanic lava flows is so recent many scientists believe it could still be active.
Mars has the largest dust storms in the solar system. They can last for months and cover the entire planet. The seasons are extreme because its elliptical (oval-shaped) orbital path around the Sun is more elongated than most other planets in the solar system.
Mars has two moons called Phobos and Deimos. They were discovered in 1877 by astronomer Asaph Hall, who named them for the Latin terms “fear” and “panic”. These moons are thought to be captured asteroids and are among the smallest natural satellites in the solar system.