There is an important and unresolved tension in cosmology regarding the rate at which the universe is expanding, and ...

We know that planets rotate, but what about the universe as a whole? No, the universe doesn't appear to rotate; if it did, time travel into the past might be possible. Although people throughout ...

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Time dilation: It’s a staple of science fiction, and whether you’re familiar with the term or not, you’ve probably encountered it in print or film. Fly fast enough to the speed of light, and your ...

A radical new theory begins with a central claim: consciousness is the fundamental field of reality; time, space, and matter ...

(CNN) — Scientists have peered into the early days of the universe, when it was about 1 billion years old, and discovered that things moved in slow motion compared with now. The finding supports ...

How big is the universe? The question has been debated for centuries with no decision. Some theorists think that the universe is infinitely large, with galaxies extending forever into infinite space.