Ace. She was one of the scientists, but I don't know what happened to her.

Three by the start of next winter for sure.

They discovered other worlds. Maybe they want to learn more about them with us. Or see how people from other worlds are with each other. Or...I don't know. They have enough stuff that they could make something of this place if the got more Organized. But they like watching us try to work out the mess, I guess.