Leaves change color in the fall because the chlorophyll ... I was looking through the tree canopy lower down to see the sun beaming its rays onto a higher elevation. Since the sun is behind ...

Some protection isn't just for skin. Your eyes should be shielded from harmful for UVA rays, too. Too much sun can damage your eyes and the skin around them, and lead to Wrinkles around the eyes ...

While sunsets on Mars are uniquely moody, NASA 's Curiosity rover has captured a stunning image of a martian sunset, featuring light rays that illuminated a bank of clouds as the sun set over the ...