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. But not this one. Meet Gaia BH1. This enormous black hole sits right ...

In 2025, astronomers sharpened their view of the planetary system around Proxima Centauri — the sun's closest stellar neighbor, which lies just 4.2 light-years away — thanks to a powerful new ...

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 ...

A violent stellar disruption recorded in 2024 has given astronomers their most comprehensive evidence yet of a black hole ...

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

Mysterious ‘little red dots’ seen by the James Webb Space Telescope can be explained by a new kind of black hole enshrouded ...

Caltech is a place unlike any other, an Institute that is truly “small but mighty.” Its small size and the expertise of its ...