Deep inside a nearby galaxy, a black hole sits behind a thick wall of dust. Almost all its light gets trapped.

The GRAPES-3 experiment in Ooty, India, operated by the Tata Institute of Fundamental Research has discovered a new feature in the cosmic-ray proton spectrum at around 166 tera-electron-volt (TeV) ...

Discovered in 1912, cosmic rays have been studied extensively and our current understanding of them is compiled into what is called the Standard Model. Recently, this understanding has been challenged ...

For the first time, scientists have watched high‑energy cosmic rays at work deep inside a thick cloud of gas, not just at its outer surface. Using the High Altitude Water Cherenkov Observatory (HAWC), ...

Supermassive black holes are some of the most powerful engines in the universe. These giants sit at the centers of galaxies, including your own Milky Way, and sometimes become active by pulling in ...

The origin of cosmic rays in the universe has confounded scientists for decades. But a study by researchers using data from the IceCube Neutrino Observatory at the South Pole reveals new information ...

This scientific figure of the cosmic ray energy spectrum, provided by researcher Bakhtiyar Ruzybayev at the University of Delaware, shows the steepening at the "knee." Below the knee, cosmic rays are ...

When Voyager 1 finally crossed the “termination shock” at the edge of interstellar space in December 2004, space physicists anticipated the long-sought discovery of the source of anomalous cosmic rays ...

High-energy astrophysics investigates the most energetic processes in the Universe, from the acceleration of charged particles in supernova remnants to the production of ultra-high-energy neutrinos ...

The Calorimetric Electron Telescope (CALET) is a “cosmic-ray hunter” mission in operation on the International Space Station. Optimized for the detection of high energy electrons, it can also identify ...