What makes red geysers stand out is that they show faint, galaxy-scale outflows of ionized gas, stretching tens of thousands ...

Astronomers have long puzzled over how some massive galaxies stop forming stars and remain dormant for billions of years—even ...

BILLINGS — Even by Yellowstone National Park standards, Giant geyser is a show-stopper. When it erupts, it shoots a roaring, splashing column of water and steam often higher than its more predictable ...