The planet which is two and a half times more massive than all the other planets in the solar system combined. It is known as a "gas giant", made primarily of gases.
The planet which is not visible to the naked eye. It was the first planet discovered with the use of a telescope. It is often described as “rolling around the Sun on its side.”
The second smallest planet in the solar system, named after the Roman god of war.It is a terrestrial planet with a thin atmosphere composed primarily of carbon dioxide.