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Astronomical Terms
The Milky Way, the galaxy containing our solar system, is about 100,000 light-years in diameter and about 10,000 light-years thick. Aphelion: see Orbit. Apogee: see Orbit. Black hole…2010 Year in Review: World News
Major World News Stories of 2010 by Beth Rowen Julian AssangeRelated Links 2010 Year in Review 2010 News of the NationScience News of 2010…June 2010 Current Events: World News
U.S. News | Business News | Disasters & Science News Here are the key events in world news for the month of June 2010…April 2011 Current Events: U.S. News
World News | Business News | Disasters & Science News Here are the key events in United States news for the month of April 2011. Possible…1997 Medal of Science Recipients
William K. Estes, Emeritus Professor of Psychology at Harvard University in Cambridge, Mass., for fundamental theories of cognition and learning that transformed the field of experimental…Pakistan Department of State Background
U.S. Department of State Background Note Pakistan Index: People Historical Overview Government and Political Organization National Security Economy Foreign Relations U.S.-Pakistan Relations…State of the Union Address: Ronald Reagan (January 25, 1988)
Ronald Reagan (January 25, 1988) Mr. Speaker, Mr. President, and distinguished Members of the House and Senate: When we first met here 7 years ago—many of us for the first time—it was with the hope…Hiroshima
(Encyclopedia) Hiroshima Hiroshima hĭrˌōshēˈmə, hērōˈshmä [key], city, capital of…hafnium
(Encyclopedia) hafniumhafniumhăfˈnēəm [key], metallic chemical element; symbol Hf; at. no. 72; at. wt. 178.49; m.p. about 2,227℃; b.p. 4,602℃; sp. gr. 13.31 at 20℃; valence +4. Hafnium is a lustrous…samarium
(Encyclopedia) samariumsamariumsəmârˈēəm [key], metallic chemical element; symbol Sm; at. no. 62; at. wt. 150.36; m.p. 1,072℃; b.p. 1,791℃; sp. gr. 7.54 at 20℃; valence +2 or +3. Samarium is a…Trending
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