Galaxy merger Arp-Madore 417-391 is on display in this new image captured by the Hubble Space Telescope's Advanced Camera for ...

Galaxy mergers are fundamental events in the hierarchical assembly of structure, in which two or more gravitationally bound systems coalesce to form a single, more massive galaxy. Such interactions ...

"This new approach can even reveal faint AGN that other identification methods will miss." When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works.

Loki's traces are harder to find because they're buried near the Milky Way's dense disk.

Billions of years ago, a young spiral galaxy began to grow in a crowded part of the universe. It pulled in gas and small ...

Looking ahead: Future Euclid observations will enable scientists to watch how galaxy collisions spark bursts of star formation, fuel shrouded black holes, and unleash energetic feedback. According to ...