one of the most tantalising questions in cosmology concerns the curvature of the universe. Is our universe
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[1] http://admin.indiaenvironmentportal.org.in/news/cosmic-poser
[2] http://admin.indiaenvironmentportal.org.in/category/newspaper/down-earth
[3] http://admin.indiaenvironmentportal.org.in/category/thesaurus/physical-science
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/astronomy
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/research