The Sirens of Titan (1959), Vonnegut's second novel, was on the Hugo final ballot along with Robert Heinlein's Starship Troopers and lost in what Harlan Ellison called a monumental injustice. Malachi Constant is a feckless but ultimately good-hearted millionaire who, in this incondensable interplanetary Candide (lacking perhaps Voltaire's utter bitterness), searches the solar system for the ultimate meaning of existence.

Constant

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The legendary Reaper, Darrow, to defend Mars from a bloodthirsty would-be conqueror, begins his long voyage home, an interplanetary adventure where old friends will reunite, new alliances will be forged, and rivals will clash on the battlefield.

As an intergalactic explorer born on a traveling spaceship, you have to choose what planet to call home and each decision results in a different encounter with aliens and space creatures.

In a world of drones and androids Zen Starling is a human thief, but mostly he just likes to ride the Interstellar Express, the sentient trains that travel through the K gates from planet to planet, something only the Guardians understand--but now the mysterious Raven wants him to steal the Pyxis, an object that could either open up a new gate, challenging the Guardians, or put the entire gate system, and the universe itself in danger.

"Human beings are natural explorers, and nowhere is this frontier spirit stronger than in the United States of America. It almost defines the character of the US. But the Earth is running out of frontiers fast. Star Trek was right -- there is only one final frontier, and that is space. In Brian Clegg's The Final Frontier we discover the massive challenges that face explorers, both human and robotic, to uncover the current and future technologies that...

The tranquility of Mars is disrupted by the earthmen who have come to conquer space, colonize the planet, and escape a doomed Earth.

For all of her sixteen years, Terra has lived on a city within a spaceship that left Earth five hundred years ago seeking refuge, but as they finally approach the chosen planet, she is drawn into a secret rebellion that could change the fate of her people.

"Six days ago, astronaut Mark Watney became one of the first people to walk on Mars. Now, he's sure he'll be the first person to die there. After a dust storm nearly kills him and forces his crew to evacuate while thinking him dead, Mark finds himself stranded and completely alone with no way to even signal Earth that he's alive--and even if he could get word out, his supplies would be gone long before a rescue could arrive. Chances are, though, he...

"From the beginning of the space age, scientists and engineers have worked on systems to help humans survive for the astounding 28,500 days (78 years) needed to reach another planet. They've imagined and tried to create a little piece of Earth in a bubble travelling through space, inside of which people could live for decades, centuries, or even millennia. Far Beyond the Moon tells the dramatic story of engineering efforts by astronauts and scientists...

UNSC Infinity fights to protect humans against such villains as Jackal pirates and the Didact. Based on the "Halo 4" video game.