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(PhysOrg.com) -- Neutrons, those particles that reside here on Earth inside the nucleus of atoms, along with protons, collectively called nucleons, are thought to exist in the far reaches of the universe inside of so-named neutron stars, which are the remnants of stars that have exploded. In a paper published on the preprint server arXiv, Spanish physicists Felipe Llanes-Estrada, and Gaspar Moreno Navarro, suggest that the densities in the cores of certain sizes of such neutron stars might be so great as to squash the neutrons down from their normal spherical shape, into cubes.

Cities get faster and more productive as they get bigger and last forever. Companies get slower and more boring, and then they go out of business. Can companies change that model?

Spacetime analogs is an emerging field of physics in which scientists investigate systems having mathematical links with general relativity, and test their theories about the early behavior of the universe. The latest in a series of such experiments is one that uses spacetime analogs to model the end of time theory, dubbed the “Big Crunch,” at which the universe is predicted to contract and eventually collapse into a black hole.

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High-resolution computer simulations prepared by a team of scientists from the Faculty of Physics, University of Warsaw (FUW), the Lebedev Physical Institute of the Russian Academy of Sciences and the Institute for Astrophysics in Potsdam made it possible to trace the evolution of large clouds of dark and normal matter that fill the Universe. The results confirm earlier assumptions regarding the basic features of dark matter, especially its distribution on cosmological scales.

A collection of atoms in the basement of Small Hall is a million times colder than outer space. It’s one of the coldest spots in the universe, but it’s not cold enough.

Eric Schmidt maintains Google Plus isn't in competition with other social networks; LinkedIn's Jeff Weiner isn't convinced the two can coexist. Who's right? Google Plus's overnight success has sent the tech press and Google 's competitors into a frenzy over how much market share the new social network will grab

Editor's note: In the August issue of Scientific American, cosmologist George Ellis describes why he's skeptical about the concept of parallel universes. Here, multiverse proponent multiverse proponents Alexander Vilenkin and Max Tegmark offer counterpoints, explaining why the multiverse would account for so many features of our universe--and how it might be tested.

In the past decade an extraordinary claim has captivated cosmologists: that the expanding universe we see around us is not the only one; that billions of other universes are out there, too. There is not one universe--there is a multiverse.

(PhysOrg.com) -- Suppose at some point the universe ceases to expand, and instead begins collapsing in on itself (as in the “Big Crunch” scenario), and eventually becomes a supermassive black hole. The black hole’s extreme mass produces an extremely strong gravitational field. Through a gravitational version of the so-called Schwinger mechanism, this gravitational field converts virtual particle-antiparticle pairs from the surrounding quantum vacuum into real particle-antiparticle pairs

(PhysOrg.com) -- University of Warwick physicist has produced a galaxy sized solution which explains one of the outstanding puzzles of particle physics, while leaving the door open to the related conundrum of why different amounts of matter and antimatter seem to have survived the birth of our Universe.

Ohio State University researchers are leveraging powerful supercomputers to investigate one of the key observational probes of "dark energy," the mysterious energy form that is causing the expansion of the universe to accelerate over time.

Physicists at the University of California, Riverside report that they have discovered a new way to create positronium, an exotic and short-lived atom that could help answer what happened to antimatter in the universe, why nature favored matter over antimatter at the universe's creation.

Modern astronomy paints a vivid picture of the universe having been born in a cataclysmic bang and filled with exotic stars ranging from gargantuan red supergiants that span the size of a modest solar system to hyperdense white dwarf stars and black holes that are smaller than Earth. These discoveries are all the more remarkable because astronomers infer them from the faintest glimmers of light, sometimes just a handful of photons

I recently ran into an entrepreneur on whose board I sat during my venture capital years. We awkwardly shook hands and then quickly slipped into a conversation that seemed to pick back up on the last one we had years ago. Back when I was the VC and he was the entrepreneur, we had been on opposite sides of a tense situation.