There are strange bubbles of particles looming above and below the Milky Way, and they may have been blasted out by our galaxy’s supermassive black hole
Source:
https://www.newscientist.com/article/2216079-there-is-a-pair-of-weird-gigantic-bubbles-at-the-centre-of-our-galaxy/?utm_campaign=RSS%7CNSNS&utm_source=NSNS&utm_medium=RSS&utm_content=home