The missing middle. These plots show that the sun shot light called high-energy gamma rays from its middle during a period of low solar activity (from about August 2008 to the end of 2009, left ...

It's easy to think of the sun as simply a bright, orange ball. But thanks to high energy X-rays dancing on its surface, NASA's Nuclear Spectroscopic Telescope Array (NuSTAR) was able to snap an ...

The sun is emitting less iron, as seen in X-rays, than the models predict. Astronomers now say they're a step closer to figuring out why.

The Fermi Gamma-ray Space Telescope There’s something wrong with the sunshine. A nine-year survey of the sun’s gamma rays has turned up two surprises: an unexpected dip in low-energy gamma ...

Astronomers have discovered the highest-energy light rays ever observed from the sun in a finding that raises more questions on how such radiation is emitted from its solar atmosphere.. Since the ...

The gamma-ray emissions from the poles were particularly concentrated in June 2014, when the magnetic poles of the sun reversed, a phenomenon that happens every 11.5 years or so at the peak of ...