Recommend a book related to the given theme.
Exploring the unknown
One great book that explores the theme of exploring the unknown is "The Martian" by Andy Weir. This sci-fi novel, set in the not-too-distant future, tells the story of astronaut Mark Watney who must survive alone on Mars after being left behind by his crew during a mission. Through Mark's incredible problem-solving skills, courage, and determination, he confronts the harsh, unforgiving environment of the unknown planet and the many challenges it presents. This book is a great read for anyone interested in space exploration and the human spirit's drive to push boundaries and explore the unknown.
Complete the following task based on the instruction and optional input provided.### Instruction:
Recommend a book related to the given theme.

### Input:
Exploring the unknown

### Output:
One great book that explores the theme of exploring the unknown is "The Martian" by Andy Weir. This sci-fi novel, set in the not-too-distant future, tells the story of astronaut Mark Watney who must survive alone on Mars after being left behind by his crew during a mission. Through Mark's incredible problem-solving skills, courage, and determination, he confronts the harsh, unforgiving environment of the unknown planet and the many challenges it presents. This book is a great read for anyone interested in space exploration and the human spirit's drive to push boundaries and explore the unknown.