On The Same Page Discussions Mentioning Merlin's Tour of the Universe: A Traveler's Guide to Blue Moons and Black Holes, Mars, Stars, and Everything Far
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| * 3500 for 2025 | 478 | 35 | 7 hours, 9 min ago | |
| 2025 Non Fiction Reader Challenge | 30 | 60 | Jul 20, 2025 07:18AM | |
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| Anne's 2025 Independent Challenge | 52 | 32 | Sep 11, 2025 11:41AM |
