Titanic cosmic bubbles blown by the Milky Way are surprisingly complex

Giant bubbles of hot gas blown outward from the Milky Way extend high and low above and below our galaxy.

The giant bubbles of hot gas blown out from the center of our Milky Way galaxy are far more complex than previously believed, a new study suggests.

The discovery could finally explain how these 36,000-light-year-tall structures, which extend from the Milky Way's disk, are formed, scientists said.