So much happened in the earliest moments of the universe. Elementary particles appeared, the first nuclei of hydrogen and helium, and fluctuations of energy and matter set into motion the formation of ...

Astronomers may have misread cosmic acceleration for 27 years. The universe may be slowing down, not speeding up.

The universe is expanding. That much is clearer. But it’s less clear whether this expansion is accelerating or slowing down. At the heart of this upheaval lies the cosmic yardstick astronomers have ...

Astronomers are rethinking one of cosmology’s biggest mysteries: dark energy. New findings show that evolving dark energy models, tied to ultra-light axion particles, may better fit the universe’s ...

Nobel laureate who mapped temperature variations in the cosmic microwave background.

Last time I wrote about new data that overturns the standard cosmological model. Before anyone starts dusting off their ...

Using CERN’s Super Proton Synchrotron, researchers generated plasma fireballs to simulate blazar jets. The beams stayed ...

Concerns are building for Arne Slot after Liverpool’s damaging defeat at home to Manchester United, a fourth-straight defeat in all competitions. MORE — Player ratings from Liverpool v Man United | ...

Standing on the sideline of a mostly silent Subaru Park as her U.S. women’s national team lost to Portugal on Thursday, Emma Hayes felt stuck in “a game of Whac-A-Mole.” For the first time in her 17 ...

PHILADELPHIA — What’s wrong with Saquon Barkley? If you want the right answer, don’t ask Barkley. “I have to do a better job of not taking negative runs,” Barkley said Sunday after his streak without ...