The US space probe Dawn began orbiting the dwarf planet Ceres Friday on a voyage of discovery into the solar system's main asteroid belt, NASA said Friday. The probe -- the first to orbit a dwarf planet -- will stay over the mysterious body for 16 months to study its structure and gather clues to help mankind better understand how the planets were created. The space probe was captured by the dwarf planet's gravity at 1239 GMT, some 38,000 miles (61,000 kilometers) from Ceres's surface. About an hour later, it sent a signal to mission controllers at NASA's Jet Propulsion Laboratory in Pasadena, California to say it was "healthy and thrusting with its ion engine," the space agency said in a statement.
GALENA, Ill. (AP) — The rail cars that split open and burst into flames during a western Illinois oil train derailment this week were retrofitted with protective shields to meet a higher safety standard than federal law requires, railroad officials said.