The outer space
发布日期 : 2016-04-21浏览次数 : 来源 :
Looking up into the sky at night you can see many stars and other objects. Today we know much more about the stars, the planets the sun, the moon and other objects in our sky.
The universe is an endless space filled with stars, planets and other objects. The sun is part if the Milky Way.
The sun is at the center of our solar system. The solar system includes all the planets that revolve around the sun, and the moons that revolve around the planets.
Our solar system consists 9 planets that revolve around the sun. Do you know what their names are? They are Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune and Pluto.