"Triplanetary" is a science fiction novel and space opera by author E. E. Smith, published in 1948. It consists of two parts. The first explains the series background, which consists of a conflict between the evil Eddorians and the benevolent Arisians. This conflict is carried out throughout the history of an oblivious humankind on Earth. The final part of the book, which was originally published as a magazine story, takes up the tale after civilization has been rebuilt.

In a fortuitous laboratory accident, crack scientist Richard Seaton has unlocked the secret of atomic energy. Now, partnered with his wealthy engineering-genius friend Martin Crane, he's preparing to give the world the gift of limitless, virtually free energy - and of space travel. But others want Seaton's secret for themselves.

When Ben Murdock receives a text message offering a fully operational starship for sale, he’s certain it has to be a joke. Already trapped in the worst day of his life and desperate for a way out, he decides to play along. Except there is no joke. The starship is real. And Ben’s life is going to change in ways he never dreamed possible. All he has to do is sign the contract. Joined by his streetwise best friend and a bizarre tenant with an unseverable lease, he’ll soon discover that the universe is more volatile, treacherous, and awesome than he ever imagined.

One of Heinlein's best-loved works, The Rolling Stones follows the rollicking adventures of the Stone family as they tour the solar system. It doesn't seem likely for twins to have the same middle name. Even so, it's clear that Castor and Pollux Stone both have "Trouble" written in that spot on their birth certificates. Of course, anyone who's met their grandmother Hazel would know they came by it honestly.

The totalitarian East has triumphed in a massive invasion, and the United States has fallen to a dictatorial superpower bent on total domination. That power is consolidating its grip through concentration camps, police state tactics, and a total monopoly upon the very thoughts of the conquered populace. A tiny enclave of scientists and soldiers survives, unbeknownst to America’s new rulers. It’s six against six million - but those six happen to include a scientific genius, a master of subterfuge and disguise who learned his trade as a lawyer-turned-hobo, and a tough-minded commander....

Dan Davis, an electronics engineer, had finally made the invention of a lifetime: a household robot that could do almost anything. Wild success was within reach, but then Dan's life was ruined. In a plot to steal his business, his greedy partner and greedier fiancée tricked him into taking the "long sleep": suspended animation for 30 years.

Jim Marlowe and his strange-looking Martian friend, Willis, are allowed to travel only so far. But one day Willis unwittingly tunes in to a treacherous plot that threatens all the colonists on Mars, and it sets Jim off on a terrifying adventure that could save - or destroy - them all.

Maureen Johnson, the somewhat irregular mother of Lazarus Long, wakes up in bed with a man and a cat. The cat is Pixel, well-known to fans of the New York Times best seller The Cat Who Walks through Walls. The man is a stranger to her, and besides that, he is dead.

Seconds before the Earth is demolished to make way for a galactic freeway, Arthur Dent is plucked off the planet by his friend Ford Prefect, a researcher for the revised edition of The Hitchhiker's Guide to the Galaxy who, for the last 15 years, has been posing as an out-of-work actor.

When a stranger attempting to deliver a cryptic message is shot dead at his dinner table, Richard Ames is thrown headfirst into danger, intrigue, and other dimensions where Lazarus Long still thrives, where Jubal Harshaw lives surrounded by beautiful women, and where a daring plot to rescue the sentient computer called Mike can change the direction of all human history.

The Green Hills of Earth is a collection of short stories from one of the masters of science fiction who has held readers spellbound for over 30 years. This collection includes "Delilah and the Space-Rigger," "Space-Jockey," "The Long Watch," "Gentlemen Be Seated," "The Black Pits of Luna," "It's Great to Be Back," "' - We Also Walk Dogs,'" "Ordeal in Space," "The Green Hills of Earth," and "Logic of Empire."

Welcome to Ringworld, an intermediate step between Dyson Spheres and planets. The gravitational force created by a rotation on its axis of 770 miles per second means no need for a roof. Walls 1,000 miles high at each rim will let in the sun and prevent much air from escaping. Larry Niven's novel, Ringworld, is the winner of the 1970 Hugo Award for Best Novel, the 1970 Nebula Award for Best Novel, and the 1972 Ditmars, an Australian award for Best International Science Fiction.

Millions of words have poured forth about man's trip to the moon, but until now few people have had a sense of the most engrossing side of the adventure: namely, what went on in the minds of the astronauts themselves - in space, on the moon, and even during certain odysseys on earth. It is this, the inner life of the astronauts, that Tom Wolfe describes with his almost uncanny empathetic powers that made The Right Stuff a classic.

Get ready to experience two more origin stories in the Backyard Starship universe.

Honor Harrington has been exiled to Basilisk station and given an antique ship to police the system. The vindictive superior who sent her there wants her to fail. But he made one mistake: he's made her mad....