Eclipsed Moon Over Wyoming . ... Credit Copyright: Mack H. Frost Explanation: A setting full moon rarely looks like this. ... A similarly setting partial lunar eclipse was visible throughout most of North and South America, while simultaneously the same partially darkened moon was visible throughout eastern Asia. ... Lunar eclipses occur about twice a year, and the next one -- a penumbral eclipse -- will occur in late November. ... NASA Web Site Statements, Warnings, and Disclaimers . ...