For decades, astronomers have sought strong evidence that
the supermassive black hole at the center of our Milky Way galaxy is producing
a jet of high-energy particles. Based on new results from NASA's Chandra X-ray
Observatory and the National Science Foundation's Very Large Array radio
telescope, they now have it.
Previous studies that used a variety of telescopes suggested
there was a jet, but these reports, including the orientation of the suspected
jets, often contradicted one another and were not considered definitive.