40 years of Joy Division’s Unknown Pleasures, my unrecognised screen background

So 40 years after the release of what I thought what was one of the most recognisable album covers of all-time, I have that image based on pulsar activity as my screen background at work. Three people so far this week have asked what it is, one asked, “Oh, is that something you’re working on.” Nobody recognises it, and when I explained, one just said “Who?” I feel old.