Tens of kilometers above Earth's surface, high-energy particles from outer space constantly strike the atmosphere, creating showers of energetic secondary particles that rain down from the sky.

When two black holes slam together, they do not simply vanish into darkness, they ring like struck bells and briefly light up the universe in ripples of gravity. For the first time, a handful of ...

An astronomer at the University of Hawaiʻi at Hilo is using data from the Canada–France–Hawaiʻi Telescope (CFHT) on Maunakea to help reconstruct a slow-motion cosmic collision, one that has been ...

Neutron collisions are cosmic events of immense power that have the ability to forge some of the universe’s most precious elements, including gold. These astronomical phenomena provide a unique ...

This illustration provided by NASA in December 2025 depicts the aftermath of a collision between two massive space rocks orbiting the star Fomalhaut. (NASA, ESA, STScI, Ralf Crawford, Space Telescope ...

Cosmic strings are artifacts of what the universe looked like in the moments before it rapidly changed from a high-energy to low-energy environment—the Big Bang. Today, scientists believe cosmic ...

The international network of gravitational wave detectors LIGO in the United States, Virgo in Italy and KAGRA in Japan (LVK) announced the publication of an updated catalogue of all gravitational ...

NEW YORK (AP) — NASA’s Hubble Space Telescope got a rare look at the aftermath of two cosmic collisions — and helped scientists solve a decades-old mystery. Nearly a century of wondering: The American ...