Invaders from Mars

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

While watching for a planet that may collide with earth, scientists stationed in Scotland are approached by a visitor from outer space.

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

Ben and a mysterious girl from his past must prevent an alien threat from destroying the world.

Starship C57D travels to planet Altair 4 in search of the crew of spaceship "Bellerophon," a scientific expedition that has been missing for twenty years. They find themselves unwelcome by the expedition's lone survivor and warned of destruction by an invisible force if they don't turn back immediately.

Ba'al travels back in time and prevents the Stargate program from being started. SG-1 must somehow restore history.

When the first manned mission to Mars meets with a catastrophic and mysterious disaster after reporting an unidentified structure, a rescue mission is launched to investigate the tragedy and bring back any survivors.

Zane Ziminski is an astrophysicist who receives a message that seems to have extraterrestrial origins. Eerily soon after his discovery, Zane is fired. He then embarks on a search to determine the origins of the transmission that leads him into a Hitchcockian labyrinth of paranoia and intrigue.

After returning from her first space mission, astronaut Sam Walker is placed under NASA’s care at a high security house for rehabilitation and medical testing. However, when disturbing occurrences begin happening around the property, she fears that something extraterrestrial has followed her back to Earth

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