A closer look at the Lambda Cold Dark Matter model, its core components, supporting evidence, and why new observations are ...

Einstein–Rosen bridges may reflect a two-directional structure of time that preserves information and hints at a pre–Big Bang universe.

Astronomers have long known the universe is expanding—but exactly how fast remains one of the biggest mysteries in cosmology. Different techniques for measuring the Hubble constant stubbornly disagree ...

New York City drivers are bracing for two weeks of congested streets as world leaders flock to the east side of Manhattan for the 79th United Nations General Assembly. The gathering runs from Tuesday, ...