Summary

Mark can create water but not very quickly. Storing the hydrogen is also a problem. Dealing with these elements is dangerous and an explosion could erupt at any time. He has to set the hydrogen on fire to make water. Mark splits apart a wooden cross that Martinez had brought on the mission. He catches the hydrazine on fire and to his delight, the process works – he created water. Due to a reserve tank of oxygen he later realizes that he isn’t making as much water as he thought and that hydrogen is building up. He is creating a bomb. He puts a space suit on and waits for the explosion in the Rover.

Mark figures out how to solve the hydrogen problem. He rigs the oxygenator to extract oxygen from the hydrogen. Hydrogen without oxygen is harmless. He has to worry...