Ansky, a once-dormant black hole, is now emitting powerful X-ray bursts, giving scientists a rare chance to study its ...

Black holes are known for their powerful gravity, which can pull in nearby gas, dust, and even stars. When this material gets ...

The most distant and earliest "dead" massive galaxy ever seen shows some galaxies lived fast and died young shortly after the ...

Learn why a black hole is becoming active and why experts still can't explain the source of its regular, periodic pattern of ...

Astronomers have peered back in time to find what looks like a population of 'hidden' galaxies that could hold the key to unlocking some of the universe's secrets. If their existence is confirmed it ...

The potential finds could be contributing to some of the faintest light we can see in the universe, say researchers.

First discovered in the 1990s, dark energy has come to feel like a familiar face of the cosmos. Astronomers first imagined ...

Scientists discover ancient galaxy created early transparent bubbles, challenging cosmic timeline of universe formation.

Astronomers using the James Webb Space Telescope have discovered the most distant quiescent galaxy ever seen – one that had ...

Astronomers using the James Webb Space Telescope (JWST) have identified the most distant known quiescent galaxy, revealing ...

Explore how the Webb telescope reveals a massive black hole from the early universe living in a dormant state for most of its ...

If dark energy is not constant, the effects would be huge. Our current model of the universe, called the Lambda Cold Dark ...