The current model of universe expansion is complicated by “Hubble tension,” an anomaly in which evidence from the afterglow of the Big Bang (known as the Cosmic Microwave Background) shows that the ...

— The universe had a secret life before the Big Bang, new study hints But as the universe's expansion slows down, the density of holographic dark energy dwindles along with it.

“In my work, I propose another model to explain the present accelerated expansion of the universe. Unlike existing models, this does not require any form of dark energy or modified gravity ...

The standard model explains the evolution of galaxies, cosmic microwave background from the big bang, the abundances of chemical elements in the universe, and many other key observations based on ...

For years, scientists have used a well-established model to explain how the universe evolves. The standard theory, called the Lambda Cold Dark Matter model (ΛCDM), is the prevailing cosmological ...

However, it does not fully explain the nature of dark matter and dark energy, mysterious components of the universe estimated to account for 96% of its composition and its accelerated expansion.

But thanks to the new James Webb Space Telescope, scientists from the University of Chicago have been able to take new and better data—suggesting there may be no conflict after all. “This new evidence ...

The standard model of cosmology is the conventional wisdom about the underlying physics of the universe. Often called the Lambda-CDM theory, this suggests the universe has three major components ...

A representation of the evolution of the universe over 13.77 billion years. The far left depicts the earliest moment we can now probe, when a period of "inflation" produced a burst of exponential ...

Their conclusion: not only was the universe expanding, but that expansion was accelerating. “People did not expect that,” says Adam Riess of Johns Hopkins University, who shared a Nobel prize ...