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black hole

(Encyclopedia) black hole, in astronomy, celestial object of such extremely intense gravity that it attracts everything near it and in some instances prevents everything, including light, from…

Roundup of Recent Science Discoveries, 1997

Was Three Company? Past evidence uncovered in Israel and France has shown that Neanderthals lived on Earth at the same time as modern Homo sapiens. Neanderthals were found to have lived about 34,…

Science Questions

What causes a rainbow? A rainbow in Indiana, Oct. 2015. Source: AP Photo/Michael Conroy Although light looks colorless, it’s made up of many colors-red, orange, yellow, green, blue,…

DK Science & Technology: Nuclear Energy

WHAT ARE FUSION AND FISSION? HOW IS A NUCLEAR REACTION CONTROLLED? RADIOACTIVITYFIND OUT MOREThe energy that makes the stars shine and produces the heat inside a nuclear reactor is nuclear energy.…

Jacksonville, Fla.

Mayor: Alvin Brown (to June 2015)2010 census population (rank): 821,784 (11); Male: 398,294 (48.5%); Female: 423,490 (51.5%); White: 488,473 (59.4%); Black: 252,421 (30.7%); American Indian and…

Baseball Contraction FAQs

Baseball Contraction FAQs The nitty gritty by John Gettings RELATED LINKS Contraction PrimerContraction TimelineBaseball Commissioner Bud SeligMajor League Baseball…

MTV Music Video Awards

2007 MTV Music Video Awards The 2007 Video Music Awards were presented September 9, 2007. Video of the Year Rihanna f. Jay-Z, “Umbrella…

International Geophysical Year

(Encyclopedia) International Geophysical Year (IGY), 18-month period from July, 1957, through Dec., 1958, during a period of maximum sunspot activity, designated for cooperative study of the solar-…