Add Yahoo as a preferred source to see more of our stories on Google. The Galactic Center Excess, shines in high-energy gamma rays that can’t be explained by ordinary astrophysical processes. Its ...

The central question in the ongoing hunt for dark matter is: what is it made of? One possible answer is that dark matter consists of particles known as axions. A team of astrophysicists has now shown ...

A new X-ray photo taken by NASA's Nuclear Spectroscopic Telescope Array (NuSTAR) showing a cloud of ejected material from a former supernova shows an eerie shape reminiscent of a hand reaching into ...

For over a decade, a dim but persistent glow near the center of the Milky Way has confused astronomers. This mysterious emission, known as the Galactic Center Excess, glows in high-energy gamma rays ...