TOXIC sulfur dioxide, and its surface temperature is 500°C.Venus year is identical to 225 days even as a Venus day is identical to 243 days.An afternoon on Venus is longer than a year.The atmosphere of Venus is made up mainly of carbon dioxide, and thick clouds of sulfuric acid completely cover the planetThese opposed situations are due to a runaway greenhouse impact on Venus.Venus is also known as Morning or Evening Star.Venus rotates backwards that means that on Venus the Sun rises in the west and sets in the east. Venus is the brightest OBJECT in the sky after the Sun and the Moon, and sometimes looks like a bright star in the morning or evening sky. Venus is included with the AID of using a thick layer of so called sulfuric acid clouds.Venus is a rocky planet and is about equal length because of the earth. product of rocky crust and mantel and an iron center.Its surroundings particularly are composed of carbon dioxide, which's an effective greenhouse gas and makes the planet a warm oven with temperatures as MUCH as 470°C.There are thick clouds of sulfuric acid THROUGHOUT its sky.