Robert
I combined the Galex image along side an image I did of M65 and M66 recently.
Its easy to compare the two images and its fairly obvious to me that indeed from the visual image 0f M65 you can trace out the long and short arms and that M66 could be almost classified as a single arm galaxy.
Also in my original there is a faint arm of M66 which "curls"around the star at the top of the galaxy from right to left ie clockwise. I believe its shown clearly in very deep images.
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