I have a bookmark folder in Firefox that I do “Open All in Tabs” as I come into office every day, and APOD has been in there from day one. I don’t remember any astronomical knowledge from it, but I sure saved quite a few really stunning pictures.

The latest two would have no problem being part of any art museum’s permanent collection: APOD Jupiter APOD NGC3132

They happen to line up perfectly (though cutoff a bit) on this page. The Jupiter clouds look a bit like a Van Gogh sky, and NGC3132 would be great for a church dome.

Whoever says science isn’t beautiful is utterly blind.