Because, counting out from the Sun, Earth is #3.
Also, a lot of the planet is made of rock.
I would assume because it is the third closest planet to the Sun?
The Earth, because it is a rocky planet and it's the third planet away from the Sun.
The Earth is known as the third rock from the sun, since it is the third planet in orbit from the sun.
Earth is.
Yes, Earth is the third planet from the Sun.
It's the Earth
The rock around the sun is called Earth.
Earth is the third planet away from the Sun. Hence the name of the show, "Third Rock From the Sun".
The Earth is the 3rd planet from the sun. (third rock from the sun, you remember that?)
1st Mercury 2nd Venus 3rd Earth
Earth is the third planet from the Sun. The planet that we live on is called Earth.
The third rock from the sun. Earth