Mars is the planet associated with the god of war, a connection rooted in ancient mythology. Named after the Roman god of war, Mars is often referred to as the "Red Planet" due to its reddish appearance, which results from iron oxide (rust) on its surface. Its association with warfare is attributed to its barren, rugged landscape and the influence of historical figures, including the Romans, who viewed the planet's color as symbolic of blood and conflict. This connection remains a popular theme in literature, art, and astronomy today.