The first manned trip to Pluto discovers some fascinating and alarming information. A trip to Pluto uncovers information that changes science and human history as we know it.

An explorer tells the tale of his time on another planet before making a strange request.

A crew of global explorers realize they may not be alone in the universe when they encounter a traveler from another world who wants to use his space technology for evil.

Over the course of millions of years, various species in the galaxy discover a human footprint on the surface of the moon and attempt to explain its origin and meaning.

A group of alien archaeologists explores the Olduvai Gorge in Africa to learn about humanity, an extinct race. However, as they begin investigating artifacts, they discover that everything they knew about humans is entirely wrong.

In the near future, a young mother leaves behind a book for her daughter before she embarks on her space journey to the outer solar system in an attempt to communicate with extraterrestrial creatures. Sections from her book are interspersed with her husband's verbal recollections of their love story, which he addresses to their young daughter.

The first man to walk on Mars recounts a trip with a strange alien companion across the planet to his disbelieving crew.

The asteroid work crews don't have much to do but tell tall tales to each other. One man tells a particularly riveting account of an expedition where he met a strange parasitic species that inhabits human bodies and barely escaped unscathed—or did he?

A thirteen-year-old space fanatic's day is made when he meets his astronaut role model, but he soon learns that his hero is not who he thought.

On a far-future Earth, a young man accidentally commits adultery and is exiled to a distant planet that has undergone catastrophe—only to realize that this planet is an experiment to create a second Earth, and he has an opportunity to lead the inhabitants in building an interstellar empire.