You are learning about the solar system in science class. Look at the pictures below. Then click on the audio button to listen to a presentation and complete the summary with the correct words. 
Our (1) __galaxy_____ is called the Milky Way. The (2) is a star in the Milky Way. Eight (3) move around the sun. These, together with the sun, are the (4) . Earth (5) the sun once a year. Earth has one (6) . Earth’s closest neighbors are (7) and (8) .