Particle Astrophysics & Cosmology (PAC)

An excess of gamma rays at the center of the Milky Way, previously discussed as a sign of dark matter, is likely caused by the superdense remains of ancient stars.

Astrophysicists Eric Charles and Mattia Di Mauro discuss the surprising glow of our neighbor galaxy.

Detectors long used to look at the cosmos are now part of X-ray experiments here on Earth.

Advance your romance with science.

Construction has officially launched for the LZ next-generation dark matter experiment.

Think you can do better than the Symmetry staff? Send us your poems!

Neutron stars have earned their share of superlatives since their discovery in 1967.

How can we measure the worth of scientific knowledge? Economic analysts give it a shot.

Using Twinkles, the new simulation of images of our night sky, scientists get ready for a gigantic cosmological survey unlike any before.

Scientists furthered studies of the Higgs boson, neutrinos, dark matter, dark energy and cosmic inflation and continued the search for undiscovere

Holiday guests will gravitate toward these physics cookies.

What have scientists learned in five years of studying cosmic rays with the Alpha Magnetic Spectrometer experiment?