Brane-world cosmology posits that our observable universe is confined to a four-dimensional “brane” embedded within a higher-dimensional “bulk”. While ordinary matter and non-gravitational forces ...

Some of the hardest questions in cosmology begin where the usual math gives up. Push Einstein’s theory far enough back toward the Big Bang, and the equations run into a singularity, a point where ...

For decades, one of the biggest questions in cosmology has remained frustratingly out of reach: what, if anything, existed ...

NOVA tells the inside story of Einstein’s masterpiece. The story begins with the intuitive thought experiments that set Einstein off on his quest and traces the revolution in cosmology that is still ...

In a continuous pursuit to understand the fundamental laws that govern the universe, researchers have ventured deep into the realms of string theory, loop quantum gravity, and quantum geometry. These ...

General relativity presents gravitation as the manifestation of spacetime curvature produced by matter and energy. In the strong-field regime, this theory predicts the formation of black holes: ...

HONOLULU, Feb. 13, 2026 / PRZen / Study suggests “invisible wedge” in distance measurements could impact Hubble Tension resolution: 512 simulations fail to match observed propagation anomaly.

A straightforward math tweak could bring tachyon fields into line with the rest of physics. Tachyons are faster-than-light particles, and tachyon fields are special cases of quantum field. The math ...

“The first thing we know about the universe is that it’s really, really big,” says cosmologist Michael Turner, who has been contemplating this reality for more than four decades now. “And because the ...

RUDN University astrophysicists have gathered the most important discoveries of modern cosmology from 1917 to our time. The collected data became an introduction to Philosophical Transactions of the ...