Three merging galaxies host three active black holes, offering rare insight into galaxy and black hole growth.

APM 08279-5255 is a massive black hole (quasar) that contains about 140 trillion times the amount in all of Earth’s oceans ...

Black holes are dark, matter-devouring balls of gravity. Most of them are so far away that we don't need to worry about them.

In 2025, astronomers sharpened their view of the planetary system around Proxima Centauri — the sun's closest stellar ...

Astronomers have decoded the hidden past of a distant red giant star by listening to tiny vibrations in its light, revealing ...

Astronomers have identified a massive cloud of water vapor surrounding a distant quasar, marking the largest single reservoir ...

What's the size of the Milky Way galaxy? Learn how, depending on your definition, the size can change.

Astronomers have confirmed the first known triple system in which all three galaxies host actively feeding, radio-bright ...

2025 was another big year for black holes, and here's our pick of the top black hole stories from the last twelve months.

Neutron stars explained through stellar remnants and collapsed stars, revealing extreme density, gravity, magnetism, and ...

So, to create a must-read story list for you, we asked our staff to select their favorite pieces of 2025. Alas, while you're ...

Black holes are among the most extreme objects in the universe, and now scientists can model them more accurately than ever ...