Cosmologists are finally beginning to sketch a coherent picture of the universe we cannot see, using exquisitely detailed ...

The universe is expanding, but astronomers still cannot agree on exactly how fast. That mismatch, known as the Hubble tension ...

In the grand puzzle of the cosmos, one question continues to defy easy answers: how fast is the universe expanding? Astronomers have tried two main methods to figure it out, but their numbers don’t ...

Scientists have released a new study that catalogues the universe by mapping huge clusters of galaxies. These clusters are some of the largest known objects in the universe — and they can help ...

"We already see indications of cracks in the standard model." Are we living in a simulation? Well, the jury's out on that one. But humans do create simulations all the time. In fact, the Euclid ...

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 ...