Why is Venus reddish brown?

Venus appears reddish-brown primarily due to its thick atmosphere, which is rich in carbon dioxide and contains clouds of sulfuric acid. This atmosphere scatters sunlight in a way that gives the planet its distinctive color. Additionally, the surface is covered with volcanic plains and highland regions made up of iron-rich rocks, contributing to its overall hue. The combination of atmospheric effects and surface composition creates the characteristic reddish-brown appearance of Venus.