I'd be inclined to give my kid a good book on star watching and show them how to use a telescope if they don't already.

@tuskiomi good question. I am her biological father.

@Scott In that situation, I'd actually rather her scream "help me, dad!" for drawing more attention.

While I'm marking this as the answer for doing a good job of discussing some of the subtleties, I'm definitely not telling her about the possibility of strangers thinking I'm not her father. I don't want to put the idea in her head that that's something she could do!

@MichaelKaras That's actually my nickname, not my real name (which is Scribbleduesexmachinerium. However, only the old gods may call me that)

@AJFaraday I've been doing that. Often she'll call me by my name first and then switch over to Daddy when I don't respond the first time.