Sunglasses are an important accessory—not only for fashion, but more importantly, for protection. This summer, focus on ...

With all of the beautiful sunlight of summer, many people are just glad for the great weather. However, there is a lurking ...

The Neil Gehrels Swift Observatory captured the afterglow of a gamma-ray burst on October 9. The bright rings are X-rays scattered by dust layers within our galaxy.

To get through the hottest days of summer, here's how to read the UV index so you know when the sun is most dangerous.

See how Sunglasses Protect Your Eyes from UV rays. The wrong pair can harm your eyes more than not wearing sunglasses at all. See how to choose a good pair.

Hey Ray: How the sun can cause you to sneeze 01:54. ... So if you ever had a stuck sneeze, and someone told you to look at the sun or up to a bright light, they knew what they were talking about!