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

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

A powerful flare unleashed a severe solar storm that caused auroras and GPS disruptions on Earth.

Radiation poisoning happens when you’re exposed to extremely high radiation levels, like those caused by a nuclear explosion. Early symptoms include nausea and vomiting. Later, it causes organ damage.