Observing this distant epoch is notoriously difficult, astronomers say. At that time, the universe was filled with a dense ...

Ice Cube' Clouds Inside Fermi Bubbles Could Reveal When Our Galaxy's Black Hole Last Exploded: Study Fermi Bubbles have become more bewildering to astronomers. Recently, scientists announced the ...

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

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

Astronomers using the Green Bank Telescope in West Virginia have spotted massive clouds of cold hydrogen gas hiding within the Fermi bubbles.

Twin orbs of superhot plasma at the Milky Way's center known as the "Fermi bubbles" contain inexplicable clouds of cold ...