Legacy is part of Bear’s famous Eon series, and a prequel to his classic, also named Eon. In the series, The Way is a tunnel through space-time entered via a hollowed-out asteroid. In Legacy, set years before Eon, a group of human colonists use The Way to set foot on a forbidden planet called Lamarkia.  There they find life forms never known before, including a single genetic entity that can take many forms, and even span a continent. There are only a few of these "ecos" on Lamarkia, and the effect of human interaction on them is unknown.  

RELATED: 8 Books for Fans of Mass Effect

In The Enemy Stars, Anderson presents a unique and convincing vision of future space travel. Crewmembers work ten-year shifts aboard an interstellar craft, teleporting back to our solar system using a “mattercaster.” Anderson’s commitment to realism was so great that he re-wrote a whole description of his fictional world’s teleporter technology nearly a decade after his book was published, just to incorporate then-new tachyon particles—hypothetical particles that travel faster than light.

Steele’s debut novel is set in the then-future year of 2016, when construction workers called “beamjacks” work on space construction projects in zero gravity. Construction work in space is similar to how it is down here: Physically demanding and dangerous, with the added “bonus” of working in vacuum and zero-G. When the beamjacks discover that their current project is secretly part of a new snooping program from the United States’ National Security Agency, they decide to fight for our right to privacy–against their own government.   

RELATED: Stellar Book Sales This Month

Earth is getting overpopulated. To solve this problem, humans send starships into the universe to find a new planet. But the universe itself is very crowded, and most places are already inhabited. When an alien council steps in, they offer to lease the humans Astra—the one remaining uninhabited world. But as they soon find out, mysterious Astra is not a place anyone would want to live…  

Zettel’s novel envisions a future where every starship needs a fool: a professional jester whose job is to keep the crew from losing it on long deep-space trips. But the fool on board the starship Pasadena has a unique new challenge—a new form of artificial intelligence forming within the ship’s onboard computer. A prescient look at the challenges today’s scientists are dealing with regarding advances with A.I. technology, and a  New York Times Notable Book!  

Helliconia  is a planet in a binary system that experiences extremely long seasons. As spring comes to Helliconia, the natives emerge from hiding to do battle with a ferocious species. Aldiss’s world-building is complete and convincing enough to sustain an entire series, so it’s no surprise that this is only the first book of a superb trilogy.    

RELATED: 11 Alarming Books About Apocalyptic Plagues

This novel from the author of the award-winning classic The Forever War deserves to be better known. New technology allows exploration far across the galaxy. Jacque LeFavre is exploring an unpromising planet when he discovers a creature with telepathic powers. Thanks to LeFavre’s find, humans can now communicate with another alien species–one that could represent a huge danger to the future of the human race.     

RELATED: Re-read: The Forever War, by Joe Haldeman

This post-apocalyptic novella is set in a subterranean fortress called the Silo. The Sheriff of the Silo, Holston, is investigating his wife’s death–and finding more questions than answers. Wool is the first part of the Silo series, Howey’s massively popular saga that originally made its mark as a self-published phenomenon and is being adapted as a major motion picture.    

Larry Niven’s Ringworld is one of the most memorable settings in all of science fiction. The massive artificial ring–as large as Earth’s orbit around the sun–spins to create artificial gravity for its vast inside surface. This 1970 novel influenced generations of writers–not to mention filmmakers and even video game designers. Halo fans owe Niven a “Thank You!”   

Blindsight has something for every science fiction fan. Watts’ novel follows the story of the first human crew to investigate an alien broadcast. What they discover calls into question the relationship of consciousness to intelligence. The book also dips its toe into a whole lot of other scientific, mathematical, and philosophical issues–including evolution, game theory, and the question of free will.  

RELATED: 8 Space Adventure Books for Fans of The Expanse