- Many Worlds in One: The Search for Other Universes by Alex Vilenkin, 2007-07-10
- The Quest For Alien Planets: Exploring Worlds Outside The Solar System by Paul Halpern, 2003-06-20
- The Musical Order of the World: Kepler, Hesse, Hindemith (Interplay) by Siglind Bruhn, 2005-10-30
- The Telescope (Inventions That Shaped the World) by Tamra Orr, 2005-03
- The worlds around us by Patrick Moore, 1956
- The Mayan and Other Ancient Calendars (Wooden Books) by Geoff Stray, 2007-11-13
- Out of This World: Colliding Universes, Branes, Strings, and Other Wild Ideas of Modern Physics by Stephen Webb, 2004-05-25
- The Big Bang and Other Explosions in Nuclear and Particle Astrophysics by David N. Schramm, 1996-08
- Worlds without End : The Exploration of Planets Known and Unknown (Helix Books Series) by John S. Lewis, 1999-10-01
- Infinite Worlds: An Illustrated Voyage to Planets beyond Our Sun by Ray Villard, Lynette Cook, 2005-06-20
- Seeking New World Vistas: The Militarization of Space by Roger Handberg, 2000-04-30
- Canyon Spirits: Beauty and Power in the Ancestral Puebloan World by Stephen H. Lekson, John McKim Malville, 2005-06-08
- Black Holes and Other Space Oddities (DK Secret Worlds) by Alex Barnett, 2002-01
- Our sun and the worlds arond it: Planets, moons, comets, and other wonders of the solar system (A Fun to learn Golden book) by Jene Lyon, 1957
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