After discovering a mysterious alien artifact on the Moon, human astronauts endeavor to uncover its purpose and message from an extraterrestrial civilization.

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.

Aliens land peacefully on Earth and promise to fix humans’ societal problems, but humans soon get so frustrated with them that they flee to other planets. The smaller Earth population ends up bringing positive change, but this emigration to other planets reveals that many other populations have fled these aliens for the same reason.

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

A newscaster recently arrived in space receives ominous advice from a jaded engineer: whatever you do, leave space because getting attracted to aliens will be the death of us all.

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.

When an alien spaceship lands on Earth in need of help, leaders of countries around the world help and house them, causing tension between humans and these costly guests.

The Eavesdropper, a human-alien hybrid woman, moves through a sentient spaceship full of comatose humans whose memories she absorbs and processes through mind reading.

Two extraterrestrial beings land on Earth in search of information and struggle to adapt.

Extraterrestrial visitors promise solutions to America's financial, environmental, and energy problems - in exchange for the country's black citizens. A cultural struggle breaks out to determine whether the trade will be made.