Dark energy—the term used to describe whatever is causing the universe to expand at an increasing rate—is one of the universe's greatest mysteries. The most widely accepted theory currently suggests ...

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A team of cosmologists in China has introduced a mathematical framework that investigates two of the deepest mysteries in ...

In the beginning, the Big Bang happened, sending everything in the universe expanding outward and apart, from a dense hot point. Since then, all that matter and energy has continued to move outward, ...

For more than two decades, the standard model of cosmology has stood as a reliable guide to the universe. Known as Lambda Cold Dark Matter, or ΛCDM, it weaves together dark energy, dark matter, and ...

Astronomers working with the Dark Energy Spectroscopic Instrument, known as DESI, have found growing hints that dark energy, ...

Dark energy is by far one of the most intriguing aspects of the cosmos that scientists are still trying to fully decode. While we're pretty sure that the universe is held together by the mysterious ...

Dark matter is some kind of substance that has gravity—it holds galaxies together—yet cannot be directly seen with any ...