Light from distant galaxies reveals important information about the nature of the universe and allows scientists to develop high-precision models of the history, evolution and structure of the cosmos.

The map, created with Sloan Digital Sky Survey data, is the first to display the span of 200,000 galaxies with pinpoint accuracy. When you purchase through links on our site, we may earn an affiliate ...

A team of researchers believe they have identified a large, rotating structure 140 million light-years away from Earth. The ...

Astronomers have discovered a vast tendril of hot gas linking four galaxy clusters and stretching out for 23 million light-years, 230 times the length of our galaxy. With 10 times the mass of the ...

Roughly 400,000 years after the Big Bang, the universe cooled just enough to allow photons to escape from the primordial cosmological soup. Over the next 14 billion years, these ancient photons—the ...

We know many things about our universe, but astronomers are still debating exactly how fast it is expanding. In fact, over the past two decades, two major ways to measure this number—known as the ...

The universe's expansion is accelerating, a phenomenon attributed to dark energy, potentially explained by a cosmological constant (Λ) in Einstein's general relativity. The ΛCDM model, the standard ...

New details from the Webb telescope indicate there might be a fundamental problem with our understanding of the universe. The spiral galaxy NGC 4258, imaged by the Hubble Space Telescope, measures ...

An expanding universe complicates this picture just a little bit, because the universe absolutely refuses to be straightforward. Objects are still emitting light, and that light takes time to travel ...

"Why do they have the same rotation? They must have a connection with each other — that would be a very strong question that cannot be explained by the ΛCDM model." When you purchase through links on ...

Our universe could be twice as old as current estimates, according to a new study that challenges the dominant cosmological model and sheds new light on the so-called "impossible early galaxy problem.

It’s hard to picture the universe in its infancy. The middle-aged cosmos now stretches across 93 billion light-years, holding up to two trillion galaxies and more than 200 billion trillion stars. But ...