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Planet Earth is in the Milky Way Galaxy, the cloudy band of light that stretches across the night sky. For years astronomers thought that the Milky Way Galaxy was the whole universe. Now we know that there are billions of galaxies, and we are starting to learn about their shapes and sizes, and what they consist of. Open this book and go on a journey light-years away. Holiday House, Inc. |
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1998-2009©Gail Gibbons All Rights Reserved,
Unauthorized Reproduction or Duplication Prohibited |