Astronomers have detected a mysterious dark object in the distant universe — and its size has them fascinated.

The largest of three newly found ring shaped structures in the cosmos are almost a million light-years across.

Scientists using a global array of radio telescopes have detected the universe’s lowest-mass dark object by observing how it ...

The interstellar object 3I/ATLAS is thought to be roughly 7 billion years old, making it even older than our solar system.

A team of astronomers used an "Earth-sized super telescope" to detect an object that emits no light, via gravitational ...

Astronomers have detected one of the darkest objects ever seen at a record cosmic distance—only with the assistance of ...

The James Webb Space Telescope's latest image shows eight spectacular examples of gravitational lensing, a phenomenon that ...

The concept of two black holes orbiting one another has been theorized for many years, but recent satellite photography may ...

What is the biggest object in the universe? Learn more about the biggest objects in the universe, including galaxies, galaxy clusters, and dark matter.

The interstellar comet 3I/ATLAS may be out of view of Earth, but orbiters on Mars were able to recently get a look at it.

Dark matter is an enigmatic form of matter not expected to emit light, yet it is essential to understanding how the rich ...

ALMA captures surprising activity in comet C/2014 UN271, Bernardinelli-Bernstein comet, the largest ever detected.