The sky is always changing colors—from a bright blue on a clear day, to red and orange sunrises or sunsets, or multiple ...

Northeast Ohio's weather conditions were just right early Tuesday morning to create some beautiful displays of light.

Refraction close refractionProcess by which a wave changes speed and sometimes direction upon entering a denser or less dense medium, eg a light ray changes direction when refracted by a lens.

The quirks of light moving through gas are the cause of stellar twinkling, which can be a bane—and sometimes a boon—for astronomers ...