One of the weirdest theories in cosmology is the holographic principle, the idea that our universe is a three-dimensional image projected off a two-dimensional surface — the idea that, yes, we are ...

Dark matter could be made from tiny black holes formed when so-called "dark baryons" collapse, scientists suggest. Or, alternatively, dark matter could be a type of particle created by a form of ...

We have not been able to detect dark matter yet, even though there are many aspects of the universe that suggest the existence of invisible matter. In one new theory, it is possible that dark matter ...

Two fresh ideas are giving scientists new ways to think about how the universe’s hidden mass came to be. Together, they paint a richer picture of dark matter’s origins and how we might still discover ...

In the beginning, the world was empty and cold. Prior to the Big Bang — yes, before the Big Bang — the universe underwent a breathtaking cosmic expansion, doubling in size at least 80 times in a ...

How much light has been emitted by all galaxies since the cosmos began? After all, almost every photon (particle of light) from ultraviolet to far infrared wavelengths ever radiated by all galaxies ...

The universe is a marvelously complex place, filled with galaxies and larger-scale structures that have evolved over its 13.7-billion-year history. Those began as small perturbations of matter that ...

In a hypertorus model of the Universe, motion in a straight line will return you to your original location, even in an uncurved (flat) spacetime. This multiply connected topology might be able to be ...

BUFFALO, N.Y. — In the beginning, the world was empty and cold. Prior to the Big Bang — yes, before the Big Bang — the universe underwent a breathtaking cosmic expansion, doubling in size at least 80 ...