According to USA Today, next week's lunar eclipse will be the longest of the century.  North America is the only continent on Earth where it won't be visible.

The best views will be in Africa and Asia, but Europe, South America and Australia will still get partial views.

The eclipse will occur on the night of July 27 into the early hours of July 28.  According to EarthSky, it's the longest total lunar eclipse of the 21 century.

A total lunar eclipse occurs when the moon and the sun are on exact opposite sides of earth, according to NASA.  Click on the above link for more information.