Zenon selfishly snapping at her parents when she is caught taking a "middle-of-the-night spacewalk".
Zenon: You guys are constantly begging me to take a greater interest in science. Then, tonight when I finally do, everyone gets all gaseous on me!
Astrid: Taking off on an unauthorized, middle of the night space walk is hardly what we had in mind!
Mark: Sweetheart, what if your tether broke while you were out there? What if we got bombarded by a sudden meteor shower?
Zenon: I can handle myself, I'm 13!
Mark: Then you better start ACTING like it.
When Zenon has to be sent to Earth for being in a class four zone (the databanks) after spying on Lutz.
Zenon: I honestly think if you put these [stress helmets] on, it'll help all of us...or maybe not.
Astrid: You have put us in a very difficult position, Zenon. You can't imagine how much I don't want to do what I have to do now. But you haven't left us any choice.
Mark: I'm sorry, Z. Your mother an-and I, have contacted your Aunt Judy.
Zenon: Aunt Judy? She hates space. She hates to travel. And you want to bring her up here to be my keeper?
Mark: You don't get it, Z. We're grounding you.
Zenon: I understand that.
Mark: No Z, I mean we're really GROUNDING you.
Zenon: What? No! No, this... You can't... Mom? Mom?
Astrid: I'm sorry, honey.