(Photo From wired.com)Recently, a research team led by the Harvard-Smithsonian Center for Astrophysics found that a black hole is spewing out some material at half the speed of light after swallowing a small star for many years, just like people burp after eating.(Photo From NASA)First, we need to understand how black holes form. When a star is about to die, it explodes, and the matter in the core...More