The earliest light in the universe has been traveling across space since just after the Big Bang. Known as the cosmic ...

In the Big Bang Theory, the cosmic microwave background — microwave-range radiation that floats through the entire universe ...

You could swim through the deepest voids and encounter a single hydrogen atom in an entire football field's worth of space.

MUSE allows astronomers to map the distribution of different chemical elements, displayed here in different colours. Calcium ...

New observations support the idea that hot, diffuse threads of gas called cosmic filaments connect clusters of galaxies ...

Astronomers have discovered the first evidence of a white dwarf wiped out by a double-detonation supernova, also providing ...

For years, scientists have worked to chart the universe’s massive structure, aiming to test key models of cosmology. These ...

Webb’s new images of the Bullet Cluster reveal the most detailed dark matter map yet, shedding light on cosmic collisions and ...

A vast filament of gas stretching across the cosmos may help solve the mystery of the Universe’s missing matter. Astronomers ...

The cosmic microwave background is the oldest light in the Universe, emitted about 380,000 years after the Big Bang. It corresponds to the moment when the Universe became cool enough for electrons and ...

Seen as a long strand with smaller threads branching, the Quipu superstructure contains 68 galaxy clusters spanning 1.4 ...

To understand gravitational lensing and dark matter, James Jee, a professor at Yonsei University, says to think of a pond ...