If you happen to be enjoying a sunny day, thank the bright surface of the sun, known as the photosphere. At a piping hot ...

Dermatologists recommend no less than SPF 30 for days when you're out in the sun—but they themselves wear SPF 50 or higher ...

The European Space Agency (ESA)'s Solar Orbiter mission has obtained a stunning high-res image of the sun's upper atmosphere.

Sunlight boosts mood, sleep, and immunity. Learn safe exposure tips and vitamin D benefits for optimal health.