A shadow falls on the moon as it undergoes a total lunar eclipse as seen from Mexico City

A shadow falls on the moon as it undergoes a total lunar eclipse as seen from Mexico City

A shadow falls on the moon as it undergoes a total lunar eclipse as seen from Mexico City April 15, 2014. The lunar eclipse on Tuesday will unfold over three hours when the moon begins moving into Earth’s shadow. A little more than an hour later, the moon will be fully eclipsed and shrouded in an orange, red or brown glow. REUTERS/Edgard Garrido (MEXICO – Tags: ENVIRONMENT SCIENCE TECHNOLOGY)