― With all the cuts to NASA, I think there is going to be an international effort to put man on Mars. I believe it should be instead an American undertaking, because then the US flag is on there and US gets more UFO crashes. ∙ Antimatter is 300 more efficient than nuclear power. It is difficult to find anti-matter on Earth so no anti-matter power plants are built. About 20 grams of anti-matter will take a spaceship to Mars and 20 grams to take them back. ∙ According to historical [...].