String theorists are betting that extra dimensions do indeed exist; in fact, the equations that describe superstring theory require a universe with no fewer than 10 dimensions. But even physicists ...

Our most powerful telescopes have revealed that the cosmos is surprisingly simple on the largest visible scales. Likewise, ...

This theory posits that the force of gravity is actually a hologram of some lower-dimensional reality. In other words, our ...

It's a very powerful idea, because if it's right it means that our whole picture of the universe is clouded by the fact that we're trapped on just a tiny slice of the higher dimensional universe.

They found that, as expected, holographic dark energy will continue to expand the universe. But, over time, its influence will slowly peter out and slow acceleration. The universe's expansion rate ...

An curved arrow pointing right. Neil deGrasse Tyson explains some of the biggest misconceptions we have about the universe. Produced by Darren Weaver and Kamelia Angelova. Additional production by ...

The idea is that the infant universe was small and lumpy, but an extreme burst of ultra-rapid expansion blew it up vastly in size, smoothing it out and flattening it to be consistent with what we ...

Despite having several worlds that require exploration, Beyond Galaxyland moves along a two-dimensional plane—while allowing ...