Readings from Green Bank Telescope detect cloud made of cold hydrogen gas inside bubbles of superheated plasma.

The Fermi bubbles were discovered in 2010 by NASA’s Fermi Gamma-ray Space Telescope. The two orbs form an hourglass structure ...

Deep within the Milky Way’s core, researchers have uncovered cold gas clouds racing through a superheated galactic wind.

Researchers have found clouds of cold gas embedded deep within larger, superheated gas clouds—or Fermi bubbles—at the Milky ...

Researchers studying the Milky Way’s center have discovered unexpected cold hydrogen clouds nestled inside the Fermi bubbles, ...

Giant bubbles of expanding gas that surround the Milky Way have been seen in visible light for the first time. The gas’s motion shifts the light’s wavelength, as depicted in this illustration.

The Fermi bubbles are giant blobs of plasma, tens of thousands of light-years tall, that extend on either side of the Milky Way’s galactic disk. When the bubbles were discovered in 2010, ...

In 2010, astronomers discovered two giant blobs centered on the core of our Milky Way galaxy. Their origins are still a mystery, but however they got there, the blobs are emitting copious amounts ...

There are swooping tendrils of energy visible only in radio wavelengths, hourglass-shaped scars of X-ray light and — towering over it all — the mysterious Fermi Bubbles.

Now known as the Fermi Bubbles, these massive, gassy blobs appear only in X-ray and gamma-ray light, teasing at an ancient and extremely powerful origin. How and when this galactic bubble-blowing ...

A digram showing where the Fermi Bubbles (red) overlap with the hourglass-shaped X-ray structures (black) at the galaxy's center. The edges of the two structures seem perfectly aligned, the ...