For the last few decades, researchers have been studying what the universe looked like in its first seconds. It is generally ...

For a fraction of a second after the big bang occurred 13.8 billion years ago, most physicists believe, the newborn universe dramatically ballooned in size, jumping from being smaller than a proton to ...

A novel theory suggests that the current expansion rate of the universe is not fixed, but was in fact quite different in the ...

For thousands of years, humanity viewed the skies as unchanging, except for a few "wandering stars" (that we now know are planets). As we improved our ability to perceive the cosmos with ...

Discover the 25 Fastest Recorded Phenomena in the Universe, from light speed to black hole jets. Explore cosmic speed limits ...

The ‘inflationary’ model of cosmology explains many large-scale features of the Universe as the result of a primordial period of exponential, almost instantaneous cosmic expansion called inflation.

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A new three-volume study explores how quantum physics, gravitation and cosmology may be understood within a unified ...

For decades, scientists have tried to measure how fast the universe is expanding. This expansion rate is known as the Hubble ...

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 ...

Astronomers have long known the universe is expanding—but exactly how fast remains one of the biggest mysteries in cosmology. Different techniques for measuring the Hubble constant stubbornly disagree ...

James is a published author with multiple pop-history and science books to his name. He specializes in history, space, strange science, and anything out of the ordinary.View full profile James is a ...