Evidence suggests the universe’s expansion has started to slow, not accelerate. The results imply dark energy is weakening and evolving faster than previously believed.

The James Webb Space Telescope may have discovered Population III stars, the universe's first generation of stars. They may ...

Why are galaxies growing colder, and what does that mean for the cosmos? The latest results from the European Space Agency’s ...

“The Universe will just get colder and deader from now on,” added Douglas Scott, study author and a cosmologist at the ...

Physicists have taken the Universe’s temperature, revealing the searing trillion-degree heat of the Big Bang’s first plasma.

The Franklin Institute announced Nov. 11 that it is awarding the 2026 Benjamin Franklin Medal in Physics, one of the nation’s ...

Led by doctoral student Tatsuya Kotani and Professor Tomoharu Oka from Keio University, the research team measured the ...

The plot represents the new model with the x-axis and the y-axis showing the minimum sizes of collapsing and expanding regions that can impact cosmological measurements. The contours are independent ...

Researchers have unveiled a new model for the universe’s birth that replaces cosmic inflation with gravitational waves as the driving force behind creation. Their simulations show that gravity and ...

The universe may have been born out of nothing, with an "anti-universe" twin where time runs in the opposite direction—rather than exploding from an infinitely small and dense point, or "singularity." ...