Scientists are only now starting to unravel the secrets of comets. Often referred to as dirty snowballs, they contain ice and elements from the very start of the universe. Some theorize that a comet, crashing into our planet, brought with it the organic material that started life on Earth. Spacecraft continues to offer new information on their makeup, from bringing back samples from a comet's tail to direct contact when a NASA-launched craft slammed into the comet Tempel-1.
First Aired: Wednesday March 7, 2007
* Cosmic Fireballs
* Asteroids: Deadly Impact
* Meteors: Fire in the Sky
* Killer Asteroid
* Super Comet - After the Impact
Video Codec: XviD MPEG-4 codec
Video Bitrate: 2045 KB/s
Video Aspect Ratio: 16:9
Video Resolution: 688 x 384
Audio Codec: MPEG-1 Layer 3 (MP3)
Audio BitRate: 160 KB/s (CBR)
Audio Channels: 2 Ch
Framerate: 25 FPS
Number Of Parts: 1
Part Size: 744 MB
Encoded by: gavin63
Subtitles: No TV Cap
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