Known as GS-NDG-9422 (9422), this galaxy's spectrum suggested a phenomenon previously unseen. Its gas emissions, rather than its stars, dominated the light, providing a rare glimpse into a ...

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

An international team found dark matter dominating the halos of two supermassive black holes in galaxies 13 billion light ...

A newly discovered galaxy is challenging what scientists thought they knew about galactic collisions. Located 567 million ...

Published in Nature Astronomy, the study reveals that there may be a shroud of gas around every galaxy that stretches up to a million light years. If that’s the case, then the Milky Way and ...

Shock-waves from the collision compress reservoirs of gas in each galaxy and trigger the formation of new stars. This creates a spectacular ring of intense emission, and lights up the system like a ...

SEE ALSO: Astronomers just witnessed a whole galaxy 'turn on the lights' in real-time The James ... start out small and grow larger by collecting gas and merging with other galaxies.