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 ...

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

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 ...

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 discover a supermassive black hole, weighing 700 million suns, firing a giant energy beam directly at Earth from ...

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

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 ...

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

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

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