Saturn
NO, Saturn is the only planet. The sun is not a planet.
Satellite.
No planet so far known, begin with the letter O.
Uranus is the planet that starts with the letter "U" in our solar system.
Yes, there is a planet called Mars that starts with the letter "M".
Planet earth has an animal that starts with the letter z. Zebra starts with the letter z and is on planet earth. There are a few microrganisms that start with the letter z also.
There is no planet within our Solar System that starts with a "t". Mercury Venus Earth Mars Saturn Jupiter Uranus Neptune
Neptune
Uranis.
Earth
Yes, there is a planet that starts with the letter "R" and it is called "Mars." Mars is the fourth planet from the sun in our solar system and is known as the "Red Planet" due to its reddish appearance.
Mars is a planet. It starts with the letters MA.