Noctilucent cloud season is upon us. If you’re in the Northern Hemisphere this summer, keep your head to the skies at sunset ...

Full-sun days will soon be the regular forecast in Michigan. To prepare, here's a breakdown of the UV index and how soon you could get a sunburn.

water-filled clouds may block out more UV rays than high, thin clouds. To keep your skin healthy, it’s important to protect yourself from the sun’s rays, especially if you know you’re going ...

You get to feel comfortable under the night ... when it’s behind a cloud—a sight so familiar that when little kids draw the sun, they usually depict it emanating rays of light.

also known as crepuscular rays, occur when sunlight shines through gaps in the clouds during sunsets or sunrises when the sun is below the horizon. The rays are most visible on Earth in hazy ...

Experts warn that up to 80% of UV rays can still penetrate clouds and windows, putting your skin at risk even on cloudy days or while indoors without proper sun protection.

Ultraviolet (UV) radiation might be invisible, but its damage is not. From sunburns to pigmentation and fine lines to deadly skin cancers, the sun's rays are responsible for some of the most ...

But rather than continuing to focus on the near-endless red stretch of rocks and dirt below ... rays of sunlight stretching across the horizon and illuminating a bank of clouds as the sun set ...

high-altitude clouds that glow with a blue, silvery hue at dusk or dawn when the sun shines on them from below the horizon. These ice clouds typically occur near the North and South Poles ...