Venus

Venus is the second planet from the sun but the hottest. The average temperature is 462 degrees Celcius! The reason is that Venus's thick atmosphere traps all the heat and heats the planet to extremely high temperatures.It is 108 million km from the sun and its diameter is 12103 km. So it is the 3rd smallest planet in our solar system. Its atmosphere blocks the surface from view with the naked eye. However some space cameras have imaged the surface without going inside the planet. The atmospheric pressure is 92 times that of the Earth's. One day is 243 Earth days and a year is 225 Earth days making Venus the only planet with a day longer than a year!