Riders to the Stars (1954)

Dr. Richard Stanton (William Lundigan) and Dr. Jerry Lockwood (Richard Carlson) are two daring young scientists who put their lives on the line to explore the universe. Seeking to discover a metal better suited to space travel, these pioneers launch into outer space to retrieve a meteorite. But, after fellow astronaut Walter Gordon (Robert Karnes) is violently killed when attempting to wrangle an enormous meteor, Lockwood panics, leaving Stanton to complete the mission on his own.