Merlin's beard, some of these kids spoke like they were real live astronauts or something! All this jibber jabber about 'celestial bodies' and whatnot. Wowza. Tori was lost already.

But she raised her hand to contribute anyway. "Astronomy is about studying the planets and moons and stars and comets and asteroids and space junk and how it all moves around and interacts and affects us here on Earth."

Good enough guess. She's done gone and used up all of her space knowledge right there in one sentence.