What your comments about aerospace remind me of is something I would myself frequently do: fantasizing about a different industry about which I know very little. (Years ago, I used to imagine going back to school to study law, on the grounds that being a lawyer is a good way to really work for social change.)

Obviously I didn't go back to school, and I certainly can't tell you what the right decision for you is. I think a bit of curiosity about the road not taken is natural--but you also have to be clear-eyed about what the alternatives actually look like.

To your specific question, however, I would strongly recommend interviewing at a few other teams inside the company and a few other companies. Before I came to my current employer, I interviewed here and a few other places. Some of them struck me by how _bad_ the interviewers were; in fact, my interview experience at my current employer (where the interviewers impressed me by their intelligence) convinced me, at the time, that if I didn't get the job I would stay at my then-employer rather than move to a less impressive place.

So interviewing can be clarifying in terms of showing you what else is out there, and helping you make a trade-off between natural wanderlust and, you know, not settling for something shitty just because it's new. ;)