2001: A Space Odyssey

On the Moon, an enigmatic monolith is found buried beneath the surface. Scientists are amazed to discover it is at least three million years old. Even more amazing, after it is uncovered, the monolith sends a powerful signal aimed at Saturn. What does it mean? A crewed spacecraft is sent to find out.

Clarke's novel is a meditation on humanity's place in the universe that works on multiple levels — as a thrilling space adventure, a philosophical treatise, and a poetic exploration of consciousness. The novel's vision of space travel and artificial intelligence was remarkably prescient.