Venus is the second planet from the Sun, orbiting between Mercury and Earth. Its size is similar to that of Earth, but only a little smaller, making it the sixth largest of the solar system's nine planets. It gets its name from the Roman Goddess of love and beauty. It is a terrestrial planet that, hundreds of millions of years ago, lost all of its water. It is the hottest planet in our solar system (even though Mercury is closer to the Sun), making it very dangerous for humans to visit. It has an extreme greenhouse effect in its thick atmosphere with a tone of carbon dioxide. The extreme heat of the planet is not the only thing that makes life on Venus unbearable for humans, the air pressure in Venus is the same as a kilometer underneath the surface of Earth's ocean. There is also acid rain that rains regularly, making the planet very poisonous. Despite the fact that the planet takes only 224 Earth days to orbit the sun, it spins really slowly, making a day on Venus 234 Earth days long, that's ten Earth days longer than a Venus year! It's the brightest planet in the solar system from Earth. It can even be seen from Earth during the day. It, along with Mercury are the only two moonless planets in our solar system.