每天早上，太阳都早早地在天空的东方为世界各地的人们送去光明和温热。其实，勤劳的太阳也只是一颗普通的恒星，和地球一样在不停地自转。生活在地球上的人们每天随着地球一起自西向东运转着，所以很难感受到地球自身的运动。有时候我们便会产生其他天体在自东向西地围绕地球运动的错觉，所以在我们的认识里太阳是东升西落的。（Every morning the sun will deliver the brightness and heat from the east of the sky to the people around the world. In fact the diligent sun is also a common fixed star, rotating continuously like the earth. The people living on the earth rotate from west to eats with the earth every day so they are very difficult to feel the movement of the earth. Sometimes we will have the illusion that other celestial bodies moves around the earth from the east to west so in our understanding, the sun rises from east and sets from west.）