There are no planets in the solar system beginning with the letter 'O'.
No college in Maine begins with the letter O.
Earth ,
Obelisk
Oman is a country. It begins with the letter O.
The planet Earth.
Uranus is a planet.
No, there is not a continent that begins with the letter O.
Oman is the only country that begins with the letter O.
Oxygen is a gas that begins with the letter O.
Oxygen is a gas that begins with the letter O.
No planet so far known, begin with the letter O.
No college in Maine begins with the letter O.
No neighboring country of Germany begins with the letter O. Oman is the only country in the world that begins with O and it is not near Germany.
Uranus
Earth ,
Mars
The Ohio Buckeye tree begins with O. The Oriental Plane tree begins with O.