If you like a great science fiction book, I strongly recommend this one. Mr. Clarke sure did a good job writing this piece.
The story starts with our ancestors, the man-apes. They are on the edge of extinction because the lack of food. Around this time a huge black structure appears from nowhere. Thanks to this structure, the apes learn to hunt and therefor, survive.
Then the author takes us to the present, or the year 2001. A discovery is made on the Moon. A huge black structure is dug out. It seems that this structure, this monolith, has been buried for millions of years, and now it’s sending signals to Jupiter.
A team of astronauts is sent to Jupiter to see what is really going on there. They are aboard the ship called Discovery, and among the crew is the supercomputer HAL 9000. Everything is going smoothly, until HAL starts acting strange.
That is all you can get from me, since I don’t want to spoil the story. As I said before, if you are into science fiction, this is a must-read.
There is also a movie, directed by Stanley Kubrick. Actually, Arthur Clarke wrote the story as a screenplay for the movie. He later published it as a book.
PS: The photo is a screenshot from the movie.