Natick, thy new name is CERS (56D: Reacts fearfully). What are we missing here? What does that mean? And furthermore, in what way are CARDS (58A: Some runners)? Thinking of Keats, we tried "pards" ("Not charioted by Bacchus and his 'pards…"), but no.
I think it must be very difficult to position nine rebus squares in a specific pattern, such as a spaceship, and then run a related phrase all across the top of the puzzle. It is done pretty well here, but I just can't get over that crossing.
OK. I looked at another blog because I knew we just had to be missing something, and we were. The spaceship is, apparently, abducting a [COW], giving "cowards" and "cowers." What the?!? Aliens abduct cows? And 1A said nine squares would be involved - well… they are all that's involved in the spaceship, but jesus, I mean, how is the cow connected? It's in the middle of a crooked line. And why oh why does the program accept some rebus squares with [ET], and then another rebus square with just a C? All or nothing at all, guys.
I could rant on and on, but I did want to say that today had the best clue for OMOO (20D: Polynesian term for an island hopper) that I've ever seen.
It's a well done puzzle, but I am not aware of cow abductions, and the puzzle was accepted with a C in it instead of a COW.