Source: CCTV.com

08-02-2006 11:28

The star Vega (Weaving Maid) is the 5th brightest star in the sky. Therefore, it's very easy to find in the summer night. The size of Vega is 16 times bigger than the Sun. The temperature on its surface is more than 10,000 degrees. The brightness of Vega is 25 times brighter than the Sun. It's 25 light years away from the Earth.

The star Altair (Cowherd) is the 11th brightest star in the sky. Therefore, it's not difficult to find in the summer night. The size of Altair is 4 times bigger than the Sun. The temperature on its surface is about 8,000 degrees. The brightness of Altair is 11 times brighter than the Sun. It's 17 light years away from the Earth.

There are two stars, Alshain and Tarazed, next to the Altair. They said those two stars on Altair's each side are the Cowherd's two children in the story. The distance between the Vega and the Altair is 16 light years. They cannot meet in the sky, as they are too far apart. In the story, there was a magpie's bridge for Weaving Maid and Cowherd to meet. Do you know the length of that bridge?

Find Star Vega and Star Altair in the sky.

 

Editor:Chen Minji