How a lunar eclipse works

The change in its shadow is based on where the moon is in its orbit. We call this cycle the phases of the moon, and it occurs roughly once a month. At least twice a year, the moon passes through the shadow cast by the Earth.
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The change in its shadow is based on where the moon is in its orbit. We call this cycle the phases of the moon, and it occurs roughly once a month. At least twice a year, the moon passes through the shadow cast by the Earth.

Breaking news editor Tom Uhler has been with the Star-Telegram for more than 30 years as a digital and print news editor. He’s a graduate of the University of Texas at Dallas and grew up in Dallas.