This seems like a nice "vanilla+" science pack, and since there are very few mods that add a single science pack, it really fills a niche. Since it's rather new I thought I'd provide a few thoughts. Fair warning, I've only checked it out in sandbox so far and haven't played through a game with it on yet!
Generally, it'd be a nice symmetry to have 2 sciences at each tier, and as such, this could be balanced to be on a tier with space science. Then it might be nice to remove it from rocket silo research, so it's not a gatekeeper to space science. You could also add it to the nuclear-related (albeit fusion) techs of "portable fusion reactor" and "Spidertron". That way it is a gatekeeper to another "victory-like" condition of attaining Spidertron.
Just some food for thought really.