So, as it turns out, if you kill someone on the moon, nothing happens when you get back to Earth. The moon is completely lawless. I know it was a bit of a risk to hit that asshole in the face shield with a rock hammer. I knew there would be a chance he would hit me back, or claw at me and tee my suit. I knew there would be no one left to help if something went wrong. I knew it would be a tough trip back with two let alone solo. The blank look on his face was worth it all. I could see on his quickly bluing face he knew why.
I didn't care. That guy was an asshole and no one will miss him. Now we both have immortality. He is the first murder victim on the moon and I am the first murderer. I have brought the sins of man to the moon.