Think of the phases labeled "new moon," "first quarter," "full moon," and "third quarter" as the numbers 12, 9, 6, and 3 on a clock, respectively. (For those of us in the Northern Hemisphere ...

Earth’s shadow will block most of the light that illuminates the lunar surface, creating what is known as a blood moon.

beginning with imagining Earth at the center of this illustration and the sun adjacent to the new moon. Think of the phases labeled "new moon," "first quarter," "full moon," and "third quarter" as the ...