<![CDATA[ Tonight's blood moon was the last that will be seen over North America until New Year's Eve 2028. ]]>
A lunar eclipse occurs when the Earth passes between the Sun and the Moon, causing the Earth's shadow to cover the Moon. This phenomenon can only happen during a full moon and can be seen from anywhere on the night side of the Earth.
A 'Blood Moon' refers to the reddish appearance of the Moon during a total lunar eclipse. This coloration occurs due to Rayleigh scattering of sunlight through the Earth's atmosphere, which filters out the blue light and allows the red wavelengths to reach the Moon.