Solution: Alpha ___ Minoris (the North Star) - NYT Crossword

I had a terrible time morphing “canis” to URSAE here, thinking that this was another name for Sirius, the Dog Star, which I mistook for the North Star (both bright, different places in the sky). I gathered that “UNESCO” was the basis of 24A, but had no idea which letter to change; after the fact, I realize that most people would say that there could actually be two letter swaps, so this entry is especially confusing. In the Times puzzle, though, this spelling is far more common. Oh, and the machine at 10D was also out of my bailiwick (and a debut).