Unfortunately, I think many homophobic Christians’ brains will short circuit as soon as they see a rainbow and block out any arguments you make. I also doubt capitalists will be motivated enough to support space more than they already do. They have their own plans and goals which aren’t easily influenced by common people’s input.

The biggest untapped opportunity to get Christian Americans on board with space is nationalism. Point out how China, India, and even the EU are making major advances and gaining increasing importance in space while our own is stagnating. You might even get Trump supporters on board when you point out how Trump was already pushing American military interests with the “Space Force.”