Astronomers have identified what could be the largest structure ever observed in the known universe—a vast network of galaxy ...

Telescopes around the world have spotted a monster radio jet streaming from a quasar dating back to the first 1 billion years of the universe. At double ...

In the heart of our Milky Way galaxy, two gigantic "bubbles" extend roughly 50,000 light-years above and below the galactic ...

Their results are consistent with the cosmic microwave background ... medium (WHIM), spread along tendrils of gas that connect galaxy clusters. But detecting this "ghost" matter is extremely ...