File:Messier 74 ULX.jpg

Summary
This is a composite image (X-ray - red, optical - blue & white) of the spiral galaxy M74 with an ultraluminous X-ray source (ULX) indicated inside the box. Image is 9 arcmin per side at RA 01h 36m 41.70s Dec +15° 46' 59.0" in Pisces. Observation dates: June 19, 2001; October 19, 2001. Aka: NGC 628, ULX: CXOU J013651.1+154547.

Licensing
The image is non-free fair use in X-ray astronomy. The image is non-free with permission.

Fair use for X-ray astronomy
The image linked here is claimed to be used under fair use as:
 * 1) it is a scientifically significant photo of an X-ray astronomy phenomenon;
 * 2) it is of much lower resolution than the original (copies made from it will be of very inferior quality)
 * 3) the photo is only being used for informational/educational purposes.
 * 4) Its inclusion in the article adds significantly to the article because it shows the phenomenon depicted in this article and how it has a significant impact on galactic X-ray astronomy to the general public.