I would choose the Planets to focus on as the starting point for learning about space with infant classes. I think having a stimulus such as ‘The little boy who dared to dream’ would be a great introduction.
I would then do a whole class art and get each table to work on a different planet so we could display them in our classroom. Each tablet would be given an outline to look at. I would also integrate the song : https://www.youtube.com/watch?v=F2prtmPEjOc. By working on a different planet each day or two, we could build an entire solar system slowly discover each one..
As the class get comfortable recalling information about the planets, I would introduce some games where pupils play What planet am I ? eg: I am very hot— children will guess which planet this is.
When the children are confident enough i would introduce a buddy system where children from older classes would come down to listen to what the infants have learned about the planets and to showcase their art.