In class today, we started talking about the size of the solar system. Your kids were really blown away. This is a topic that is super motivating to them.
One of the resources that we looked at was this map of the Milky Way galaxy:
The kids were really interested in the map. If you want to get a copy for their bedroom wall, you can find it on Amazon here:
A few details that you might want to talk to your kids about: