The moon will pass through Earth’s shadow early Wednesday morning (Oct. 8) and no enthusiastic skywatcher should ever miss a total eclipse of the moon. It is the second of four consecutive total eclipse of the moon (the first occurred last April), and is part of a so-called lunar eclipse tetrad. During the time when the moon is entering, and later emerging from, Earth’s shadow, some secondary phenomena may be overlooked. Wednesday’s total lunar eclipse will be visible, weather permitting, from much of North America, as well as to observers in Australia, western Asia and across the Pacific Ocean. The moon will appear orange or red, the result of sunlight scattering off Earth’s atmosphere. That’s why it’s called a blood moon.