The universe is haunted by "cosmic ghosts" called neutrinos, which seem to be the "whispers" of stars that died in supernova ...

A long time ago, in a galaxy far, far away, a massive star collapsed, triggering a supernova explosion so bright it could be ...

For nearly a century, astronomers have known that the universe is expanding. In the late 1990s, two independent teams, the ...

By Will Dunham WASHINGTON, June 16 (Reuters) - Taking a fresh look at data involving a specific type of stellar explosion, a team of researchers says it has confirmed the long-accepted notion that the ...

When massive stars die, they unleash some of the most powerful explosions in the universe. Yet not all supernovae are created ...

A newly discovered star suggests tiny relic galaxies like Pictor II preserved the chemical material created by the universe's first star explosions and later helped build larger galaxies like the ...

For decades, physicists have searched for one of the faintest signals in the cosmos: a background of neutrinos released by ...

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

Astronomers have made a surprising discovery inside the remains of a giant star that exploded about 1,600 years ago. They ...

Using the James Webb Space Telescope (JWST), a team of astronomers has found the earliest known supernova, one which exploded when the universe was just 730 million years old. This observation ...

Some of the first supernovae might have looked remarkably like this one, which was produced by a chemically simple star.

The universe’s expansion might not be accelerating but slowing down, a new study suggests. If confirmed, the finding would upend decades of established astronomical assumptions and rewrite our ...