My son was (still is) another who wanted to get out into space, loves watching the night sky. There is an app for phones today that will tell you what you are looking at, so if your son has a cell phone you could help him learn more https://www.astronomytrek.com/top-10-free-smartphone-apps-for-stargazing/
Thanxs Joan. Will load it on one of our phones since he is in our opinion still to small to have a phone.