Cloudy skies on the Front Range made it tough to see last night's supermoon, the last of the year. 
 
A supermoon occurs when a full moon or new moon is in its closest proximity to the earth, as earthsky.org explains: 
 
To the best of our knowledge, astrologer Richard Nolle coined the term supermoonover 30 years ago. The term has only recently come into popular usage. Nolle has defined a supermoon as:
 

… a new or full moon which occurs with the moon at or near (within 90% of) its closest approach to Earth in a given orbit.

That’s a pretty generous definition and allows for many supermoons. By this definition, according to Nolle:

There are 4-6 supermoons a year on average.

 
We've been collecting supermoon images from Colorado photographers through the summer. Take a look at the gallery above and share your photos with nminor@cpr.org.