Strange x-ray pulses hint at a surprisingly long-lived white dwarf orbiting precariously close to a supermassive black hole ...

The newly discovered "blazar," which has a mass equal to 700 million suns, is the oldest of its kind ever seen and changes ...

Hours before Jan. 19, after the Supreme Court upheld a law that would require TikTok be sold to a U.S.-held company in order ...

A black hole infamous for strange features has once again baffled astronomers, this time with rapid X-ray flashes. What could ...

Galactic nuclei images reveal how supermassive black holes interact with their surroundings using infrared telescopes.

The James Webb Space Telescope has captured a mid-infrared picture of Sagittarius A*, filling in a long-standing gap in ...

Astronomers have detected the most ancient blazar ever observed, originating from the early universe and emitting a beam of ...

The dense stellar remnant would, if confirmed, be the closest known object to any black hole, according to preliminary ...

NASA telescopes reveal 35% of supermassive black holes are hidden by dust, reshaping theories about their role in galaxy ...

In 2018, a galaxy about 270 million light-years away from Earth exhibited a major increase in activity. It quieted down again by 2020 -- only to dramatically increase its output again in 2023. At that ...

Astronomers have uncovered the most distant blazar ever discovered, a supermassive black hole with a mass of 700 million suns ...

Supermassive black holes with powerful jets of high-energy particles, pointing directly at Earth are called blazars.