Astronomy:Deep Impact
The comet is a star with a radiant tail. People have been mesmerized by these entities since the dawn of time. The trailing comet tail is several tens of millions of miles in length. The body， by comparison， is a mere six miles in diameter. However， despite its size， hidden in this tiny celestial body is the key to uncovering the birth of the solar system itself. Recently， NASA scientists came up with an unconventional means to discovering the identity of this comet. A probe vehicle will be rammed into the comet to observe the substances that spurt out from inside.
- Added：2006
- Country：Japan
- Duration：60
- Time of update：2011/8/16 15:16:44