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Brian Greene Quote: “We're on this planet for the briefest of moments in cosmic terms, and I want to spend that time thinking about what I co...”
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Abstract Word Cloud For Astronomy With Related Tags And Terms Stock Photo, Picture and Royalty Free Image. Image 16528742.
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Chapter 18: Chapter 18: Cosmology. WHAT DO YOU THINK? What does the universe encompass? Is the universe expanding, fixed in size, or contracting? Will. - ppt download
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