I initially had something referencing light pollution, but felt it wasn't as relevant to the point and took it out. When talking to kids, giving them the whole nine yards at every opportunity is overwhelming. Giving them just enough to get the point across is much more effective. Explain once without over explaining, demonstrate, and then let them experience it. Never been a teacher, but it works as a coaching technique that translates well in other areas. Giving too much info that's not relevant verges on mansplaining IMO.