Don't think I need to worry about Ro liking space. I've been showing her videos and doing a few little experiments with her, and she's interested. And she likes sitting down and watching with me if I have a documentary on. A lot of it is obviously still over her head, and her attention starts to wander during the stretches of old guys reminiscing, but she perks right up again when there's footage of launches, dockings, the lunar rover, Charlie Duke falling down repeatedly, etc.
She's fascinated by the flying bedstead, although I'm not sure she understands that it wasn't used for anything other than practicing lunar landings.