HD
0
Space Science: Comets, Meteors, and Planetoids
Space Science: Comets, Meteors, and Planetoids
Shows how the spectroscope, radio and optical telescopes are used to provide information about the origin of comets, meteors and planetoids. Special effects show the meteor shower of ...
HD
4.0
The Phantom Planet
The Phantom Planet
After an asteroid draws an astronaut and his ship to its surface, he is miniaturized by the phantom planet's exotic atmosphere.
HD
4.1
The Day the Sky Exploded
The Day the Sky Exploded
Scientists discover that a group of meteors are hurtling on a collison course with Earth, and if they hit, the planet will be destroyed.