‘Ice Cubes in a Volcano’: Scientists Baffled by Mysterious Clouds in Center of the Milky Way
In the center of our galaxy, gigantic, balloon-like structures of high-energy radiation extend thousands of light-years above and below the Milky Way’s plane. Known as the Fermi bubbles, the massive lobes may have been the result of a violent outburst in our galaxy’s recent past. A new discovery of cold hydrogen clouds embedded inside the bubbles adds another level of mystery to the objects, suggesting they’re only a few million years old—practically brand-new, by cosmic standards. Using the Na