The northern lights may not have been as bright as you expected, but Earth’s atmosphere was still highly active.

A solar radiation storm stronger than one we’ve seen in over two decades is in progress, the Space Weather Prediction Center ...

A solar radiation storm marks the release of intense, rapidly-moving charged particles toward Earth and can impact space launches, aviation and satellite operations. The last time severe solar ...

More than half of people diagnosed with cancer have radiation therapy, which uses carefully targeted doses of high-energy radiation to kill cancer cells. Radiation oncologists are the highly trained ...