初中英语外研版八年级下Unit1Has it arrived yet.ppt

文档介绍：Unit 1 Has it arrived yet? spaceship Earth Mars Moon outer space What is outer space like? Has anyone been to outer space? What ’ s in outer space? Now let ’ s have a look! Our Galaxy ---The Milky Way ( 银河) ? There are more than 200 billion stars in our galaxy ( 星系), and the Sun is only one of them. ['g ?l? ks ?] n. n. 银河; [天] 星系;银河系; Other Galaxies There are other galaxies in the universe. The stars we see at night are the suns in other solar systems. the solar system How can we go to outer space? By spacecraft. space shuttle astronaut