Astronomy:Hi-tech Challenges — The Sun
As the days endlessly follow each other like the waters and rives that have been flowing since the start of time， so light and shadow in turn， sharing the whole of earth between. Light is the rays of lightening brightness coming from a star that we call the sun. It's because of the sun's unceaseable heat and light that make life possible. The sun is a fascinating story. Let's get a closer look at the sun in the program.
- Added：2006
- Country：America
- Duration：30
- Time of update：2011/8/17 9:57:13