Crossword Puzzle PLANETS 7Online version Activities about the reading. by t w 1 Mercury is the closest _______ to the Sun. 2 A planet about the same size as the Earth. 3 The number of planets in our solar system. 4 It is at the centre of our solar system. 5 What colour is Mars? 6 Which planet is furthest from the sun? 7 Which planet is between Saturn and Mars? 8 Which planet has a ring around it? 1 8 2 4 5 6 7