Astronomers have found a pair of enormous bubbles of X-rays, above and below the Milky Way, which were probably created by our galaxy’s supermassive black hole
Source:
https://www.newscientist.com/article/2262113-the-milky-ways-black-hole-burped-out-two-colossal-x-ray-bubbles/?utm_campaign=RSS%7CNSNS&utm_source=NSNS&utm_medium=RSS&utm_content=home