NASA's Chandra X-ray Observatory, which was launched in July of 1999, is the most sophisticated X-ray observatory built to date. Chandra is designed to observe X-rays from high energy regions of the universe, such as the remnants of exploded stars, black holes etc.
See the actual press-release from May 7th, 2001
MANY OPEN QUESTIONS ABOUT A BLACK HOLE: XTEJ1118+480
All these questions are answered in my book The Electric Universe (p 666-670).
Visit the official web site from Chandra at http://chandra.harvard.edu/
or my v isit my own website that I have dedicated to this satellite at