Dark energy may be the most mysterious substance ever proposed, but many scientists are certain it exists. Why?

New supercomputer simulations hint that dark energy might be dynamic, not constant, subtly reshaping the Universe’s structure. The findings align with recent DESI observations, offering the strongest ...

"The universe never ceases to amaze and surprise us." When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. New results from the Dark Energy ...

For a quarter century, cosmology has leaned on one framework to explain how the universe expands. Known as the ΛCDM model, it assumes about 70 percent of the cosmos is filled with an unseen force ...

Welcome to the age of precision cosmology, a scientific era in which astronomers and physicists have measured almost everything about our universe—except for its deepest mysteries: dark matter and ...