Could reality be made of more dimensions than those we perceive? The question has consumed some of the most brilliant physics ...

In 1980, Stephen Hawking gave his first lecture as Lucasian Professor at the University of Cambridge. The lecture was called ...

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At the turn of the century, it sounded as if string theory could give us big answers about the universe. Well… has it?

Today's physicists are struggling with a quandary. They have accepted two separate theories that explain how the universe works: Albert Einstein's general theory of relativity, which describes the ...

British physicist Stephen Hawking may claim that extra dimensions provide the key to understanding the "grand design" of the universe, but it's Chinese-American mathematician Shing-Tung Yau who ...

String theory proposes tiny vibrating strings existing across 10 dimensions, unifying forces and particles beyond the ...

String theory is a hypothetical idea that purports to be a theory of everything, able to explain the fundamental microscopic aspects of all of reality, from the forces of nature to the building blocks ...

Is the universe really limited to just four dimensions — length, width, height, and time? For nearly a century, theoretical physicists have been exploring a mind-bending idea: that reality might ...

Einstein introduced the cosmological constant to his equations of general relativity because he believed the universe was static. Faced with evidence that the universe was actually expanding, however, ...