Two strange X-ray spots of energy revolve around the center of the galaxy

Millions of years ago, a powerful explosion shook the center of the river the Milky way, sending double shock waves exploding across the sky. These waves bulldozed across the galaxy, heating all the gas and dust in their path and leaving behind two hot, highly energizing gamma-ray spots.

Today, those blobs – called now Close Bubbles – stretches half the width of our galaxy. One lobe rises for 25,000 light-years above the disk of the Milky Way, and the other extends just as high beneath it. Since their discovery in 2010, bubbles have been a monolithic mystery of our galaxy – and now we know they are not alone.