It is hot enough to melt lead. A thick poisonous cloud layer covers all of Venus. Mars is farther from the Sun than Earth is. It is bitterly cold. Mars has a red rock-covered surface with many extinct volcanoes.
Earth is the third planet from the Sun.
The Earth is the only planet in our solar system with liquid water on its surface. As far as we know, it's the only planet that has living plants and animals on it. The Moon is Earth's nearest neighbor in space. The Moon has a pitted surface and is a barren, waterless place. It is just over a quarter of Earth's size, and it travels around the Earth in 27.3 days.