PASADENA, CALIF. — Baby stars have at last been found in the harsh environment at the center of the Milky Way, astronomers said here this week at the 214th meeting of the American Astronomical Society. These are "stars that have just ignited their core and they are just starting to produce light. So it is a very early phase in the star formation process," said team member Solange Ramirez of NASA's Exoplanet Science Institute at Caltech. The heart of our galaxy is an extreme environment, with fierce stellar winds, shock waves and a core supermassive black hole all packed into...