The Phantom Planet (1961)

The Phantom Planet
Science Fiction
After an asteroid draws an astronaut and his ship to its surface, he is miniaturized by the phantom planet's exotic atmosphere.
Starring
Dean Fredericks, Coleen Gray, Anthony Dexter, Dolores Faith, Francis X. Bushman, Richard Weber, Al Jarvis, Dick Haynes, Earl McDaniel, Mike Marshall
Directed By
William Marshall