NASA Believes Test Jet Hit 5,000-Mph Mark <Tab/> <Tab/> Add Science - AP to My Yahoo! By ROBERT JABLON, Associated Press Writer LOS ANGELES - Three years after its first test flight ended in an explosion, NASA on Saturday successfully launched an experimental jet that the agency believes reached a record-setting speed of about 5,000 mph. The unpiloted X-43A made an 11-second powered flight, then went through …showed first 75 words of 4826 total…

…showed last 75 words of 4826 total…array of tropical fish, is under threat from record high temperatures, over-fishing and pollution. Environment Minister David Kemp said the new zoning would increase protection to 33.3 percent from 4.5 percent of the Great Barrier Reef Marine Park which covers 134,400 square miles -- an area only slightly smaller than Germany or Japan. Tourism activity on the Great Barrier Reef, situated off Queensland state in Australia's northeast, injects an estimated A$4.5 billion ($3.3 billion) into the economy each year.