Cosmic voids may seem like the emptiest places in the universe, stripped of matter, radiation, and even dark matter. But they’re far from nothing. Even in these vast empty regions, the fundamental ...

Astronomers using the MeerKAT telescope discovered a hydroxyl megamaser in a galactic merger 8 billion light-years away, amplified by gravitational lensing and operating at radio wavelengths.

New research suggests that dark energy isn't needed to explain the acceleration in the expansion of the universe — instead suggesting giant voids in space are creating an illusion. When you purchase ...

Astronomers have solved the decade-long mystery of how a bizarre cosmic object toggles rapidly between "high" and "low" energy states: by launching plasma cannonballs from its orbit. The object in ...

The search for the origin of a mysterious ultra-energetic cosmic neutrino detected in 2023 may have finally reached a 'blazing' conclusion ...

Black holes that turn matter into energy could explain dark energy and answer two other cosmic questions. Now, the challenge ...

For me, this study was a reminder of how interconnected astrophysical processes are. A phenomenon usually studied in high-energy astrophysics—cosmic-ray acceleration—turns out to be central to ...

Osaka, Japan – A high-energy particle falls from space to the Earth’s surface—it is not clear where it came from or even what it is, exactly. This may sound like something out of science fiction, but ...

Some of the most energetic cosmic rays in the galaxy may come from a surprisingly small source. If Max Planck Institute for Astrophysics researcher Laura Olivera-Nieto and her colleagues are right, ...

The deepest mysteries of the universe often begin with the biggest questions. Few are more puzzling than the birth of supermassive black holes. These giants, weighing millions to billions of times ...