For more than a century, physicists have suspected that the familiar three dimensions of space and one of time might be only ...

In this video, we explore the fundamental ingredients of the universe, including 4D spacetime, particles with specific ...

Encouraged by successes in understanding black holes, theoretical physicists are applying what they’ve learned to whole ...

In a cafe at CERN in 1992, three physicists realized they disagreed about how many constants are needed to describe all of nature. A recent paper suggests only one – time – is necessary.

Einstein's theory of general relativity is our best description of the universe at large scales, but a new observation that reports a "glitch" in gravity around ancient structures could force it to be ...

Although these findings from JWST are yet to be confirmed, they mark the closest astronomers have come to locating the ...

Controversial research suggests the Big Bang may be a myth due to its reliance on the Doppler effect theory. This idea says the universe is neither expanding, nor contracting; instead it is steady, ...

The observable universe is 92 billion light-years across and contains trillions of galaxies. Telescopes can only show us the observable universe; we can't see beyond it. The universe's shape is ...

The fabric of expanding space as illustrated over cosmic time. One of the consequences of the expansion is that the farther away a galaxy is, the faster it appears to recede from us, and that the ...

How did the universe start? Did we begin with a big bang, or was there a bounce? Might the cosmos evolve in a cycle of expansion and collapse, over and over for all eternity? Now, in two papers, ...