Just checked Robs link to the Steve Crouch's APOD.
http://apod.nasa.gov/apod/ap080418.html
Seems NASA doesnt understand either if you check the text (They say the centre of the neb).
After Mr Sidonios education- thx (I even fail Rorshach tests - they all look like murder scenes to me) seems NASA could also be enlightened - but nah keep it here.
M