[PopeOfNope]

Read Rhetoric by Aristotle. You're using what he calls Dialectic (facts and figures) to convince people. Most people either don't care about facts and figures or can't understand them. You need to make appeals to emotion, or rhetoric. As for how to effectively communicate in Rhetoric, if I knew that I'd be far more popular than I currently am. :) Maybe ask tptacek for some pointers?

Something else to keep in mind: speaking from a place of authority might help as well. On this matter, you have a serious disadvantage. An anonymous person on the internet will never be able to convince most people that NASA is wrong about space. Unless you're literally a rocket science and can prove you're an expert in the field, most people will believe NASA because they trust NASA.