human
What are some of the best books on astrophysics?
assistant
1. "A Brief History of Time" by Stephen Hawking 
2. "The Elegant Universe: Superstrings, Hidden Dimensions and the Quest for the Ultimate Theory" by Brian Greene 
3. "Astrophysics for People in a Hurry" by Neil deGrasse Tyson 
4. "Cosmos: A Personal Voyage" by Carl Sagan 
5. "The Fabric of the Cosmos: Space, Time, and the Texture of Reality" by Brian Greene