Original - The famous Sombrero galaxy (M104) is a bright nearby spiral galaxy. The prominent dust lane and halo of stars and globular clusters give this galaxy its name. Something very energetic is going on in the Sombrero's center, as much X-ray light has been detected from it. This X-ray emission coupled with unusually high central stellar velocities cause many astronomers to speculate that a black hole lies at the Sombrero's center - a black hole a billion times the mass of our Sun.
Reason
This image already is a FP, but I cannot find the nomination page anywhere. I suspect that it was promoted back before peer reviews were necessary and just slipped through the cracks. I'm sure it's just a formality, but we should all probably make it "official". If anyone can find the peer review page for this picture, please let me know that this is not necessary. Thanks!
