LONDON (Reuters) - Chinese scientists said on Wednesday they had gathered evidence that shows a giant object in the center of our galaxy is a super-massive black hole. Zhi-Qiang Shen and researchers at the Shanghai Astronomical Observatory captured radio waves emitted just beyond the edge of the mysterious object, known as Sagittarius A, with a system of 10 radio telescopes spread across the United States. In a report in the science journal Nature they said it "provides strong evidence that Sgr A is a super-massive black hole." The celestial objects that suck in everything around them including light are among...