Which planet is known as the Red Planet?

Mars is known as the Red Planet due to its distinctive reddish appearance, which is a result of iron oxide, commonly known as rust, on its surface. This characteristic coloration makes Mars easily recognizable in the night sky. The name "Red Planet" is widely used in both scientific discussions and popular culture, highlighting its visibility and unique features compared to other planets in our solar system.

The other planets, while having their own unique traits, do not share this specific reddish hue. Earth, for instance, is often referred to as the "Blue Planet" because of its surface covered mostly by water. Venus is known for its bright, yellowish-white appearance due to its thick atmosphere and cloud cover, while Jupiter, the largest planet, is characterized by its bands of clouds and the Great Red Spot, which does not render it "red" in the same way Mars is. Thus, Mars stands out prominently as the Red Planet among the options provided.