火星 (Huo Xing)

火星 (Huo Xing), or Mars, is the fourth planet from the Sun in our solar system. Known as the "Red Planet" due to its iron-rich surface that gives it a reddish appearance, Mars has a cold, thin atmosphere mostly made of carbon dioxide. It features the tallest volcano, Olympus Mons, and a vast canyon, Valles Marineris. Mars has polar ice caps and evidence of ancient water flows, making it a key focus for exploring past potential habitability. Scientific missions aim to study its surface, climate, and possibility of sustaining life or human exploration.