I would use the book The Darkest Dark by Chris Hadfield there is even a video of him reading his own book which I love
https://www.youtube.com/watch?v=sxoG6Eug7jI
I love using Chris Hadfield’s question and answer videos on youtube
https://www.youtube.com/watch?v=3bCo
I used the book Aliens in Underpants save the World, here is a pic of my display this year. We used these books as inspiration to create aliens and rockets as seen in the image.
We used the book to write descriptive sentences- a colour, a size, a number, and a doing sentence about an alien.
I set up a role play area, we used Chris Hadfield videos to imagine life in space, how you brush your teeth, they loved the what food you eat in space video.
I also played this song before aistear so we could use the names of planets when we play. https://youtu.be/mQrlgH97v94