For decades, astronomers wondered why most nearby galaxies are speeding away from the Milky Way instead of being pulled in by ...

Most of the (dark) matter beyond the Local Group of galaxies (which includes the Milky Way and the Andromeda Galaxy) must be ...

A NASA animation has sized the biggest black holes known to scientists, including one that has the mass of 66 billion Suns.

Four galaxies crowd the center of a collapsing structure 1.4 billion years after the Big Bang. Each one is churning out stars at a pace that defies comparison with the present-day universe. Around ...

The existence of massive, elliptical galaxies in the early universe has puzzled astronomers for two decades. An international team led by Nikolaus Sulzenauer and Axel Weiß from the Max Planck ...

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 ...

Most messages are press releases about astronomical discoveries—okay, scratch that; most of them are spam, but science announcements are an easy second place. But I also get questions from readers ...

Zeb Rocklin does not work for, consult, own shares in or receive funding from any company or organization that would benefit from this article, and has disclosed no relevant affiliations beyond their ...

"When Arp 220 is observed as a whole, it's one of the best places in the universe for astronomers to study how gravity, star formation, and powerful winds work together with strong magnetic fields to ...

Dailymotion See 4K imagery of colliding galaxies from Siena Galaxy Atlas Posted: January 22, 2026 | Last updated: January 22, 2026 See amazing views of colliding galaxies NGC 520 and barred galaxy IC ...

Using early data from the European Space Agency’s Euclid space telescope, astronomers have analyzed over one million galaxies to test a long-standing idea in astrophysics: that galaxy mergers help ...