There may be an ultraheavy explanation for the mystery surrounding the origins of the highest-energy particles ever observed.

Researchers analyzing pulsar data have found tantalizing hints of ultra-slow gravitational waves. A team from Hirosaki University suggests these signals might carry “beats” — patterns formed by ...

For many years, scientists have been trying to understand cosmic rays—tiny, fast-moving particles that stream through space and bombard Earth nonstop. These high-energy particles are linked to ...

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, ...

NASAs four Magnetospheric Multiscale, or MMS, satellites at the Astrotech Space Operations facility in Titusville, Florida, March 2015. (NASA via AP) (Uncredited) NEW YORK – Scientists have detected ...

Astronomers from the International Centre for Radio Astronomy Research (ICRAR), in collaboration with international teams, have made a startling discovery about a new type of cosmic phenomenon. The ...