James Webb spotted a young galaxy blasting away its star-forming gas, revealing how massive galaxies may die early.

The expansion of the universe is still accelerating under the influence of dark energy, despite recent claims to the contrary ...

The universe might not be expanding as we thought, study says - Until now, we have believed that the universe’s expansion is ...

By Will Dunham WASHINGTON, June 16 (Reuters) - Taking a fresh look at data involving a specific type of stellar explosion, a ...

Scientists confirm the universe is still expanding faster, refuting a recent challenge that questioned the existence of dark energy.

In recent years, whenever astronomers have gazed into the night sky, they’ve noticed something peculiar: Some of its massive stars—the true titans of the cosmos—appear to be missing. The largest of ...

Using the James Webb Space Telescope (JWST), an international team of astronomers has discovered a new Type II supernova. The newly detected supernova, named SN Eos, exploded when the universe was ...

Artist’s conception of a magnetar surrounded by an accretion disk that is wobbling, or precessing, because of the effects of general relativity. Some models of magnetars suggest that high-speed jets ...

The James Webb Space Telescope is weighing in on a longstanding debate over why we don’t see more of the most massive red supergiant stars go supernova. NASA/ESA/CSA/Northrop Grumman In recent years, ...