Astronomers explain the science behind March’s Blood Worm Moon, a total lunar eclipse turning the moon red overnight.

So that redness you see during a blood moon eclipse is a combination of light from every sunrise and sunset on earth, all happening at once. So, the moon appears red for the same reason that ...

Short-wavelength blue and violet are scattered more than other colours; long-wavelength red is scattered least. At sunrise and sunset, the light passes through more air and more atmosphere, so there ...