Daily Dialogue — July 17, 2017

“I’ve been thinking about laws on Mars. There’s an international treaty saying that no country can lay claim to anything that’s not on Earth. By another treaty if you’re not in any country’s territory, maritime law applies. So Mars is international waters. Now, NASA is an American non-military organization, it owns the Hab. But the second I walk outside I’m in international waters. So here’s the cool part. I’m about to leave for the Schiaparelli Crater where I’m going to commandeer the Ares IV lander. Nobody explicitly gave me permission to do this, and they can’t until I’m on board the Ares IV. So I’m going to be taking a craft over in international waters without permission, which by definition… makes me a pirate. Mark Watney: Space Pirate.”

— The Martian (2015), screenplay by Drew Goddard, novel by Andy Weir

The Daily Dialogue theme for the week: Scientific Explanation, suggested by Melinda Mahaffey.

Trivia: The atmospheric pressure on the Martian surface averages 600 Pa (0.087 psi), about 0.6% of Earth’s mean sea level pressure of 100 kPa (14.69 psi). It is so low that a “fierce storm”, as they put it, would be something akin to a very light breeze messing up your hair. Author Andy Weir admitted this was his biggest inaccuracy in the story. Due to the low air density sound would not travel like it does on Earth and you would have to stand next to someone and scream for them to hear you, providing you could survive the freezing cold temperature, poisonous atmosphere and lack of pressure.

Dialogue On Dialogue: There are lots of scientific explanations in The Martian, most of them coming from Mark himself as he records journal entries about his exploits.