Mots Croisés Planets in our solar systemVersion en ligne The eight planets in our solar system. par Kevin Refalo 1 The biggest planet in our solar system 2 The smallest planet 3 The furthest planet from the Sun 4 The seventh planet from the Sun 5 Planet with rings. 6 Our closest planet 7 The only planet that harbours life on it. 8 Also known as the red planet 8 5 2 1 6 3 7