What story made you fall in love with science fiction and fantasy?S

Science fiction and fantasy are genres that harbor infinite possibilities — so there are an infinite number of ways to discover them. From classic books to brand new games, every story is someone's first experience of the genre. So what's the story that made you discover a love for science fiction and fantasy?

Please share your choice below — and include a picture, if possible. It's just more fun to scroll through a bunch of cool pictures, rather than a wall of text. Thanks!

Top image: Cover detail from Arthur C. Clarke's The Sentinel.