The universe follows predictable rules, behaving classically according to Einstein’s theory of general relativity. So, what ...

While the latest study is by no means the first to propose the idea of multiple universes, it offers a mathematical model to show how merging with other, smaller universes might expand our universe.

While the idea of multiple universes interacting with ours isn't new, this study develops a mathematical model to explore the hypothetical impact of this on the evolution of our universe.

Now, a new study proposes something bold. What if the universe isn’t just expanding—but spinning too? A Cosmic Disagreement. To understand why this matters, it helps to know what’s at stake.

New supercomputer simulations suggest the Milky Way could be surrounded by dozens more faint, undetected satellite ...

The inescapable conclusion was that, in the remote past, the universe was much smaller, denser, and hotter. This discovery gave rise to the Big Bang model of cosmology, which describes how the ...

Joseph Polchinski, 63, Leading Theorist on Multiple Universes, Dies. Joseph Polchinski, one of the most creative physicists of his generation, whose work helped lay the mathematical foundation for ...

In 1934, Tolman published his book “Relativity, Thermodynamics, and Cosmology,” inspired in part by the descriptions of an expanding universe model first proposed by Edwin Hubble in 1929.

The cyclic model of the universe he helped pioneer is just that: a theory that the universe forms itself again and again in cycles. Proponents of this model are asking us to rethink the Big Bang ...

At some level, we know the Standard Model cannot encapsulate all there is about the particles in the Universe. Contemporary Physics Education Project (CPEP), U.S. Department of Energy / NSF / LBNL ...