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					http://cfa-www.harvard.edu/				
							 
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					Complete astonomy textbook for first-year college courses.				 
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					User-friendly learning system on the earth and space sciences for use by the general public. From the University Corporation for Atmospheric Research.				 
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					Righting wrong ideas. Addresses astronomical and scientific misconceptions spread by movies, TV, the news, and popular beliefs.				 
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					02. Observable Universe and Beyond. 03. Superclusters. 04. ... 15. Elementary Particles and the World of Planck Scale. 16. Frontier of Science. 17. Appendices ...				 
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					Find physics news, reference materials, societies, journals, new theories, jokes, cartoons, and more.				 
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					Non-technical, current, astronomy information, news, and photographs. Night sky maps and viewing tips. Daily StarDate radio scripts (English and Spanish)				 
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					Article about the matter that can't be detected by its emitted radiation but whose presence can be inferred from gravitational effects on visible matter such as stars and galaxies.				 
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