T he sky isn't just blue by chance. I t takes all the colors of the rainbow for us to see it that way. I t happens because of something called the Rayleigh effect, or Rayleigh scattering ...

To uncover the mystery of the sky’s blue hue, we first need to understand sunlight. Though it appears white to our eyes, ...

Thursday, April 3rd, is National Find a Rainbow Day. Hawai'i, the "Rainbow Capitol of the World," is known for its vibrant Ānuenue (rainbows), but climate change threatens their future. A ...

Rainbows happen when sunlight passes through raindrops in the sky. When this happens, light becomes separated into a rainbow of colors—red, orange, yellow, green, blue, indigo (blue-violet), and ...

If there were no scattering, the sky would be dark like it is on the moon, which does not have an atmosphere. Light at the blue end of the rainbow is scattered more efficiently than the other colours.

From ocean to sky, blue is seemingly everywhere - but it's one of the most difficult colours for nature to produce using pigments. Animals usually appear blue to the human eye because of microscopic ...