9 across: Lab supplies top star (3)

By the sounds of things, most people left this clue til last, which is a sure sign of dodginess. I assumed that the answer was going to be some star that I had never heard of and left the clue undone, but, no, DA really did have lab supplies as the direct clue for ova, so that top star = nova – a (top as a verb, as in to top his head) = ova = lab supplies.

While lab supplies is strictly correct as a direct clue for ova, it’s certainly not a reasonable direct clue.