At first, only a few things are known about the celestial object that astronomers dub Rama. It is huge, weighing more than ten trillion tons. And it is hurtling through the solar system at inconceivable speed. Then a space probe confirms the unthinkable: Rama is no natural object. It is, incredibly, an interstellar spacecraft. Space explorers and planet-bound scientists alike prepare for mankind's first encounter with alien intelligence.

It has been 40 years since the publication of this classic science-fiction novel that changed the way we look at the stars and ourselves. From the savannas of Africa at the dawn of mankind to the rings of Saturn as man adventures to the outer rim of our solar system, 2001: A Space Odyssey is a journey unlike any other.

The Overlords appeared suddenly over every city - intellectually, technologically, and militarily superior to humankind. Benevolent, they made few demands: unify earth, eliminate poverty, and end war. With little rebellion, humankind agreed, and a golden age began.

From early work like "Rescue Party" and "The Lion of Comarre", through classic stories including "The Star", "Earthlight", "The Nine Billion Names of God", and "The Sentinel" (kernel of the later novel and movie 2001: A Space Odyssey), all the way to later work like "A Meeting with Medusa" and "The Hammer of God", this comprehensive short story collection encapsulates one of the great science fiction careers of all time.

The opening episode begins on Trantor, capital of the Galactic Empire, with the meeting of Seldon and Dornick, their trial, and their exile to Terminus. The action then jumps forward 50 years, to the first Seldon Crisis, where the repercussions of the recent independence of the Four Kingdoms of the Periphery are being felt on Terminus, and are handled by the first Mayor, Salvor Hardin....

The old world is buried. A new one has been forged atop the shifting dunes. Here in this land of howling wind and infernal sand, four siblings find themselves scattered and lost. Their father was a sand diver, one of the elite few who could travel deep beneath the desert floor and bring up the relics and scraps that keep their people alive. But their father is gone. And the world he left behind might be next.

In what is considered one of Heinlein's most hair-raising, thought-provoking, and outrageous adventures, the master of modern science fiction tells the strange story of an even stranger world. It is 21st-century Luna, a harsh penal colony where a revolt is plotted between a bashful computer and a ragtag collection of maverick humans, a revolt that goes beautifully until the inevitable happens. But that's the problem with the inevitable: it always happens.

When prospector Bob Broadhead went out to Gateway on the Heechee spacecraft, he decided he would know which was the right mission to make him his fortune. Three missions later, now famous and permanently rich, Robinette Broadhead has to face what happened to him and what he is...in a journey into himself as perilous and even more horrifying than the nightmare trip through the interstellar void that he drove himself to take!

Drake, a retired police detective, receives a call in the dead of night from an alien-obsessed podcaster. He hastily departs for Montana the following morning. The phenomenon continues all over the globe. What are they? What do they mean? Britt is on assignment for a digital magazine when she encounters one of the Glass in a tragic boating accident, leaving her no choice but to follow the lead. Panic ensues as mysterious creatures are sighted.

The human race is at War with the "Buggers," an insect-like alien race. As Earth prepares to defend itself from total destruction at the hands of an inscrutable enemy, all focus is on the development of military geniuses who can fight such a war, and win. The long distances of interstellar space have given hope to the defenders of Earth--they have time to train these future commanders up from childhood, forging them into an irresistible force in the high orbital facility called the Battle School.