Astronomy:Science Wonders — Satellite
Invented just 40 years ago， geostationary satellites have revolutionized life of mankind. There are over 800 of them far above us in space， orbiting the earth. In this video program， we shall discover how satellites are built to withstand the harsh conditions of outer space. We shall see the testing procedures needed to make sure they can withstand collisions with space debris.
- Added：2006
- Country：France
- Duration：25
- Time of update：2011/8/17 10:32:16