Three galaxies are colliding, and all of them are hiding something powerful at their core. This isn’t just rare. It’s unheard ...

Astronomers have uncovered surprising evidence that challenges a long-standing rule about quasars, some of the brightest ...

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 ...

This suggests that black hole growth during mergers is inefficient and uneven. Rather than steadily consuming gas, black ...

New observations reveal that the relationship between ultraviolet and X-ray light in quasars has changed over billions of ...

A massive filament of gas and dust, designated X7, has been elongated during its long approach to the Milky Way galaxy's ...

Leading X-ray space telescopes XMM-Newton and XRISM have spotted a never-seen-before blast from a supermassive black hole. In ...

Taking a look back over the last twelve months, here are several of the biggest science stories in physics this year, as well ...

Distance records are an excellent proxy for the state of the art in astronomy. Finding extremely faraway galaxies is hard. In ...

In a remarkable breakthrough, astronomers have uncovered the first known triple system where three galaxies, each harboring ...

In any other year, the supermassive black hole mentioned above would probably scoop the award for most striking outburst, but not in 2025. This year, that accolade goes to a flare designated ...