What does "this sentence" mean?
If I may offer some unrequested advice, I would recommend that, when you are president, you lower the priority of putting humans into space. Make science truly the primary goals of the government space program. Whenever anyone suggests that a space program requires a human, examine it in detail with great care to see if the additional cost really is worth it or should be spent in other ways. My sense (poorly developed, I know, since I am not a politician) is that the public thirsts after science. They love the space images, the discoveries, the unmanned robots exploring Mars. Their only real interest in astronauts is their safety; can they be brought back home safely?
What does "My sense (poorly developed, I know, since I am not a politician) is that the public thirsts after science." mean?