As soon as the sun flashes us with some rays ... adding that UVA rays, “also causes tanning (they are the main form of light found in tanning beds) and can penetrate glass and clouds. UVA is connected ...

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 ...

SEE ALSO: Sunshine and clouds to kick off a long week of warm temperatures and dry conditions "They develop as a result of ice crystals slowly falling through the air, reflecting the sun’s rays ...