The first manned expedition to Mars is invaded by an unknown life form, which stows away on the rescue ship.

Humanity finds a mysterious object buried beneath the lunar surface and sets off to find its origins with the help of HAL 9000, the world's most...

Aliens have landed and are hiding on Earth, but need Earth’s scientists to help them fight an inter-planetary war.

A planet is discovered in the same orbit as Earth's but is located on the exact opposite side of the sun, making it not visible from Earth. The...

Starship C57D travels to planet Altair 4 in search of the crew of spaceship "Bellerophon," a scientific expedition that has been missing for twenty...

When the first manned mission to Mars meets with a catastrophic and mysterious disaster after reporting an unidentified structure, a rescue mission...

A mysterious force knocks the moon from its orbit around Earth and sends it hurtling on a collision course with life as we know it.

A boy tries to stop aliens that have taken over his town and are brainwashing its inhabitants.

A small-town doctor learns that the population of his community is being replaced by emotionless alien duplicates.

A global scientific summit debates and fails on a plan to stop a massive asteroid heading straight for Earth, with all countries blaming each other...