There are instructions about what to look for in the sky and how best to see it, with useful advice for children about wearing warm clothing and not going out alone to observe from lonely locations at night. If you flew to another place in the universe, you'd see that those stars only look like that because they happen to almost line up with the Earth's position. This book has an excellent activity that shows this three-dimensional concept, by making a model of a constellation with stars on different length rods. It's obvious from the model that the stars are really at differing distances from us. You can even make your own telescope out of plastic tubing and a couple of lenses.
Children are naturally curious, and have a sense of wonder that often fades in later life.
Books such as this are a way to tap into that enthusiasm for learning and introduce them to new subjects.