• Mercury 
• Venus 
• Earth 
• Moon 
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• Saturn 

Venus Quick Facts

• Venus does not have any moons or rings.
• Venus is nearly as big as the Earth with a diameter of 12,104 km.
• Venus is thought to be made up of a central iron core, rocky mantle and silicate crust.
• A day on the surface of Venus (solar day) would appear to take 117 Earth days.
• A year on Venus takes 225 Earth days.
• The surface temperature on Venus can reach 471 °C.

Venus is often called the Earth’s sister planet. The Earth and Venus are very similar in size with only a 638 km difference in diameter, Venus having 81.5% of the Earth’s mass. Both also have a central core, a molten mantle and a crust.

At one point it was thought Venus might be a tropical paradise. The dense clouds of sulphuric acid surrounding Venus make it impossible to view its surface from outside its atmosphere. It was only when radio mapping was developed in the 1960s that scientists were able to observe and measure the extreme temperatures and hostile environment. It is thought. Image result for venus.