Starship Asterisk*

The explanation pointed out two other bubbles in addition to the large bubble in the Spitzer image. I espied a semi-circle of stars at approxmiately 12 o'clock position above the tight cluster of stars. Is it another bubble or just a coincident arrangement of stars?

http://antwrp.gsfc.nasa.gov/apod/ap070714.html
Either way; it makes a very interesting photo! I like the view the cluster of stars in the middle make.
Orin