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Billion years
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291	National Aeronautics and Space Administration Age of the Universe: 10-25 Billion Years Add to Reading List Source URL: cosmictimes.gsfc.nasa.gov Language: English - Date: 2010-01-04 09:51:54 Science Radio astronomy Universe Observational astronomy Cosmologists Quasar Big Bang Cosmic microwave background radiation Arno Allan Penzias Physics Astronomy Physical cosmology
292	National Aeronautics and Space Administration Age of the Universe: 6 Billion Years Add to Reading List Source URL: cosmictimes.gsfc.nasa.gov Language: English - Date: 2010-01-04 09:51:56 Physical cosmology Standard candles Variable stars Cepheid variables Local Group Cosmic distance ladder Andromeda Galaxy Galaxy Globular cluster Astronomy Space Astrometry
293	National Aeronautics and Space Administration Age of the Universe: 12-20 Billion Years Add to Reading List Source URL: cosmictimes.gsfc.nasa.gov Language: English - Date: 2010-01-05 09:36:53 Big Bang Dark matter Cosmic microwave background radiation Supernova Universe Observable universe Age of the universe Cosmology Metric expansion of space Physics Physical cosmology Astronomy
294	National Aeronautics and Space Administration Age of the Universe: 2 Billion Years Add to Reading List Source URL: cosmictimes.gsfc.nasa.gov Language: English - Date: 2010-01-04 14:33:49 Astrometry Local Group Spiral galaxies Standard candles Edwin Hubble Harlow Shapley Andromeda Galaxy Cosmic distance ladder Milky Way Astronomy Space Physical cosmology
295	National Aeronautics and Space Administration Age of the Universe: 13.7 Billion Years Add to Reading List Source URL: cosmictimes.gsfc.nasa.gov Language: English - Date: 2010-01-04 14:33:51 Big Bang Dark energy Dark matter Cosmic microwave background radiation Wilkinson Microwave Anisotropy Probe Age of the universe Observable universe Universe Metric expansion of space Physics Physical cosmology Astronomy
296	National Aeronautics and Space Administration Age of the Universe: 6 Billion Years Add to Reading List Source URL: cosmictimes.gsfc.nasa.gov Language: English - Date: 2010-01-04 09:51:54 Standard candles Physical cosmology Variable stars Cepheid variables Local Group Andromeda Galaxy Cosmic distance ladder Galaxy Globular cluster Astronomy Astrometry Space
297	FUEL fundamentals Our industry is getting Greener every year In the past 10 years alone, our industry has invested almost $8 billion to improve Add to Reading List Source URL: canadianfuels.ca Language: English - Date: 2014-02-28 13:42:27 Liquid fuels Petroleum products Fuels Emission standards Air pollution Gasoline Petroleum Greenhouse gas Vehicle emissions control Soft matter Matter Chemistry
298	Appendix A Fiscal Years 92–01 Summary During fiscal years 1992–2001 (FY92–01), Congress appropriated almost $1.9 billion for the programs Add to Reading List Source URL: cdmrp.army.mil Language: English - Date: 2003-02-24 14:31:29 Military-industrial complex United States Department of Defense
299	Tribune Dakar, Senegal – NGOs attending the Dakar Forum have calculated it would cost 8 billion dollars annually to translate into reality the promises made 10 years ago in Jomtien to universalise education. Add to Reading List Source URL: www.unesco.org Language: English - Date: 2001-06-18 09:27:42 International economics UNESCO French West Africa Non-governmental organization Philanthropy Cheikh Anta Diop Education For All Senegal Dakar International development Africa Development
300	From Rubber Bands to Big Bangs The Universe has been expanding for almost 14 billion years from a smaller, hotter, denser form to its present cooler, larger, and less dense form. You might ask, “What is expanding, and Add to Reading List Source URL: universeadventure.org Language: English - Date: 2007-07-03 17:13:38 Space Cosmic microwave background radiation Redshift Big Bang Metric expansion of space Star Universe Electromagnetic radiation Wavelength Physical cosmology Physics Astronomy

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