If you saw “Lullaby Moon” at Gas Works Park or elsewhere throughout the city last year, you know not to miss the free show when it returns Friday evening. If you missed this hard-to-explain performance — which creator Lucia Neare calls a “wonder” — join hundreds (perhaps thousands) of others at Gas Works at 7:00 p.m. on September 10. There isn’t a bad seat in the house.

From Neare’s website:

Return to a world of wonder in Lullaby Moon 2010. Please wear white and bring a sleeping bag or blankets to keep cozy. Those with early bedtimes are welcome to attend any part of the festivities.

Lullaby Moon 2010 is a free, large-scale, site-specific public performance celebrating the new moon. The spectacular continues the joy and mythology of the 2008-09 series that enchanted thousands of Seattle residents. Lullaby Moon celebrates our precious place in the Milky Way galaxy and the promise inherent in everyone’s dreams.

You can see pictures and read much more about previous “Lullaby Moon” performances here. The images in this post are from last year’s Gas Works show and were taken by Mary Witter. Dozens more are on her Flickr page.