1 Mars â Sometimes called the red planet and the brother of Earth. 2  Mars is the closest planet to the Earth. 3  Jupiter â The largest planet in the Solar System. 4  Saturn â Sixth planet from the Sun.
1 When talking about a general direction, the word is often not capitalised, example: the north side of the house. 2  Place names are capitalised: East Sussex, West Virginia, South Africa.  In other cases, adjectives and nouns normally begin with small letters: Go south for three miles, then go east for another three miles.
The general rule to follow is to use lowercase when referring to compass directions and to capitalize when referring to specific regions. Compass directions and the terms that are derived from them (south, southern) are lowercased when they are referring to direction or location. For example, The thunderstorm will head east across the state.