Lunar Eclipse Essentials - Updated

  • Released Thursday, April 21, 2022
  • ID: 14143

When the moon passes through the Earth's shadow, it causes the Moon to look very unusual for a short period of time. This event is called a lunar eclipse, and it occurs roughly twice a year. Learn more about how lunar eclipses work in this video!

* To Note: This is an updated version of a previous video that has been edited to remove references to specific dates of lunar eclipses. The purpose of doing so was to create a version of this informational product that could be used more broadly in educational settings.

For original video, visit:


Please give credit for this item to:
NASA's Goddard Space Flight Center


This visualization is related to the following missions:

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