The universe’s accelerating expansion has long puzzled physicists. For decades, dark energy, an unseen force thought to make up nearly 70% of the cosmos, has been the leading explanation. But a new ...

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The expansion of the universe is still accelerating under the influence of dark energy, despite recent claims to the contrary.

Contemporary cosmology rests on a framework that describes the evolution and large-scale structure of the Universe through solutions of Einstein’s field equations. The standard paradigm, known as the ...

It is widely thought that our universe is expanding at an ever-accelerating rate. But could we have that wrong? That is what a group of scientists from South Korea claims, but other scientists have ...

Gravity, the force that attracts objects toward each other, is currently framed by Albert Einstein's theory of general relativity. This framework describes gravity as the curvature of spacetime, the ...

Researchers confirm the universe's expansion is still accelerating, challenging previous claims of dark energy weakening and halting this growth.

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 ...

Cosmological expansion is widely treated as a proven fact. It is not proven. For nearly a century, cosmology has told a simple story about a universe that began in a hot, dense state and has been ...

See more of our trusted coverage when you search. Prefer Newsweek on Google to see more of our trusted coverage when you search. The expansion rate of the universe may be slowing down, rather than ...

When you bake a loaf of bread or a batch of muffins, you put the dough into a pan. As the dough bakes in the oven, it expands into the baking pan. Any chocolate chips or blueberries in the muffin ...

Fresh analysis of stellar explosions challenges recent claims that cosmic acceleration had slowed, strengthening evidence that dark energy continues to drive the universe’s expansion.