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

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

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

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.

Once charted as a 'guest star' in ancient China, dreaded as a harbinger of ill omens in medieval Europe, and preserved in the ...

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 ...

Astronomers using the James Webb Space Telescope report that a powerful gamma-ray burst detected in March may have been produced by the explosion of a massive star just 730 million years after the Big ...

Researchers confirm the universe's expansion is still accelerating, challenging previous claims of dark energy weakening and halting this growth.

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, ...