President Trump raised eyebrows earlier this year when he announced plans to create a “Space Force,” which would become the sixth branch of the military. Vice President Mike Pence later announced in a speech that the branch was needed in order for the US to maintain military dominance in space. The proposed Space Force is estimated to cost $13 billion in its first five years. And despite some snickers among political observers, renowned astrophysicist Neil deGrasse Tyson doesn’t think the Space Force is that crazy of an idea. But Tyson, one of the authors of “Accessory to War: The Unspoken...