1. A Brief History of Time by Stephen Hawking (Paperback) - Usually ships in 24 hours Price: $12.24

2. Nightwatch: A Practical Guide to Viewing the Universe from Firefly Books (Hardcover)

3. The Elegant Universe: Superstrings, Hidden Dimensions, and the Quest for the... by Brian Greene (Hardcover) Price: $13.57

4. The Fabric of the Cosmos: Space, Time, and the Texture of Reality by Brian Greene (Paperback) - Usually ships in 24 hours Price: $11.53

5. A Briefer History of Time by Stephen Hawking, Leonard Mlodinow (Paperback) - Usually ships in 24 hours Price: $12.24

6. 13 Things That Don't Make Sense: The Most Baffling Scientific Mysteries of Our... by Brooks, Michael (Audio Cassette) - Usually ships in 7 to 11 days Price: $43.08

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