Science teacher Ryland Grace wakes up on a spaceship light years from home with no recollection of who he is or how he got there. As his memory returns, he begins to uncover his mission: solve the riddle of the mysterious substance causing the sun to die out. He must call on his scientific knowledge and unorthodox ideas to save everything on Earth from extinction… but an unexpected friendship means he may not have to do it alone.

The first manned flight to Mars returns after having been out of communications since it had arrived on Mars. What would it reveal?

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

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.

The world is delighted when a spacecraft containing a crew made up of the world's astronauts lands on the moon, but are shocked when the astronauts discover an old British flag and a document declaring that the moon is taken for Queen Victoria proving that the astronauts were not the first men on the moon.

A young farmer assembles a band of diverse mercenaries to defend his peaceful planet from an evil tyrant.

After an asteroid draws an astronaut and his ship to its surface, he is miniaturized by the phantom planet's exotic atmosphere.