Albany – Sky watchers can once again see a sight that has not been seen for three years: a complete lunar eclipse. The eclipse is expected to begin shortly before midnight next Monday, December 20th, and will continue on until just after 5:00 in the morning on the 21st.
A lunar eclipse occurs when the moon passes opposite from the sun, through Earth’s shadow. While there are other types of partial lunar eclipses where only portions of the moon are hidden in shadow, a total lunar eclipse can only occur during the full phase of the moon. This is because the moon has to line up just right on the other side of Earth, exactly opposite of the sun.
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