The Hubble constant is one of the most important numbers in cosmology because it tells us how fast the universe is expanding, which can be used to determine the age of the universe and its history. It ...

The universe is expanding faster today than early cosmic measurements appear to allow. A proposed reversal in dark energy once seemed capable of closing that gap, but a sharper statistical test finds ...

For nearly a century, astronomers have known that the universe is expanding. In the late 1990s, two independent teams, the Supernova Cosmology Project, led by Saul Perlmutter, and the High-Z Supernova ...

Quantum computers process information in a fundamentally different way from conventional computers, using quantum bits, or ...