Despite what your TV listing says, it isn't always sunny in Philadelphia -- or anywhere else. That means your solar panels won't always be soaking up the sun's rays. Solar panels are rapidly growing ...

The sun is in an active portion of its 11-year solar cycle, meaning there could be an uptick in solar storms capable of causing power outages, radio blackouts and GPS disruptions on Earth. Scientists ...

In the span of two days last week, the sun released two strong solar flares — meaning the solar system experienced its most powerful explosions which can cause some communications blackouts on Earth, ...