Newslink: A Pair of Gargantuan Space Bubbles Might Be Spitting Cosmic Rays at Earth

Astronomers have discovered a distant galaxy that's giddily blowing bubbles like a toddler with a glass of chocolate milk. Unlike milk bubbles, however, these two huge galactic balloons are filled with gas, stretch a few thousand light-years across and appear to be crackling with charged particles 100 times more energetic than any found on Earth.

https://www.space.com/space-bubbles-jiggle-through-cosmos.html