I can't believe doodad is a technical term. Haha! Cool!
That pic is awesome.
The use of the term "dark" in astronomy confuses me. How can we call something we can see, like a nebula, dark, and at the same time call something we can't see (as far as I know lol), like matter, dark?!
Why is this particular nebula strange? Is it the only one like it we've identified?