If the cosmos is lopsided, the foundation of modern cosmology starts to look a little shaky.

Some 13.8 billion years ago, the universe began with a rapid expansion we call the Big Bang. After this initial expansion, which lasted a fraction of a second, gravity started to slow the universe ...

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Dark energy is a mystery so daunting that it stretches and strains our most robust theories. The universe is expanding, driven by the unknown force that we've named Dark Energy. Dark Energy is also ...

A massive survey of the cosmos is revealing new details of one of the most mysterious facets of the universe, dark energy. Intriguingly, when combined with other observations, the data hint that dark ...

An international group of more than 900 researchers studying the expansion of the universe presented their findings on Wednesday during the American Physical Society’s Global Physics Summit in Anaheim ...

The original version of this story appeared in Quanta Magazine. Physicists have deduced subtle hints that the mysterious “dark” energy that drives the universe to expand faster and faster may be ...

Dark energy has been a mysterious element of cosmological equation since it was proposed three decades ago, but new research says we can make the math of the universe’s expansion work without relying ...

Dark energy, a force responsible for the expansion of the universe, is mostly unknown. But this month, researchers released a new survey meant to unpack its mysteries. Dark energy, a force responsible ...

What is the universe made of? This question has driven astronomers for hundreds of years. For the past quarter of a century, scientists have believed “normal” stuff like atoms and molecules that make ...

What is the universe made of? This question has driven astronomers for hundreds of years. For the past quarter of a century, scientists have believed “normal” stuff like atoms and molecules that make ...

Imagine looking out over a beautiful vista. The sun glances off the snowy peaks of distant mountains, a river winds through rolling hills. There is something wonderful about beholding the contours of ...