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Updated: May 3, 2025
We use that heat to turn a chemical called methane into its component parts. Methane is known as marsh gas, Foster. I wouldn't expect a Planeteer to know that. It is composed of carbon and hydrogen. When we pump it into the heat coils of the reactor, it breaks down and creates a gas that burns and drives us through space. But that isn't all it does."
The other constituents of coal-gas methane, carbon monoxide, olefines, etc. are not affected by passing through boiling sulphur, and for ordinary laboratory work their removal is quite unnecessary, as they do not in any way interfere with the precipitation of metallic sulphides.
However, since it was impossible to determine the molecular weight, he could not say what the gas was, save that the empirical formula was C TH H O N . It broke down at a temperature of only 89° centigrade. The gases left consisted largely of methane, nitrogen, and methyl ether. Dick is still in the dark as to what the gas is." He paused, then exclaimed: "Look over there!"
The air in the room was clear, completely free of the misty whirling methane ammonia of death that swirled around them outside. Recovering from his surprise quickly, Astro closed the door and walked to the center of the room, looking around curiously. Tom had already slipped off his mask and was examining the equipment lying on the floor.
Slowly the satellite of Saturn was dying, and through the methane ammonia atmosphere, the glittering rings of the mother planet shone down on her death struggle. Tom Corbett and Astro walked through the streets silently, overcome by the desolation around them.
With the explosive charge safely hidden under Tom's blouse, they had a chance to fight back. It was a small chance, perhaps, but at least a chance. Outside, they walked slowly through the swirling methane ammonia and Tom edged closer to his unit mate. "Can you hear me, Astro?" he whispered through the mask amplifier. The big cadet simply nodded, keeping his eyes forward.
He smiled again, and Merriton gravely shook his head, while Mr. Narkom, dropping for the time being his air of pompous boredom, became the interested listener in every line of his ample proportions. "Go on, old chap," he said eagerly. "Methane," said Cleek, serenely, "is a colourless, absolutely odourless gas, slightly soluble in water.
Such incidents were repeated over and over as the searchers came upon sleeping miners, sick mothers and children, elderly couples that were unable to move. Each time they were taken outside to a jet car where masks were strapped over their faces, and then driven to the spaceport. And, all the while, the deadly methane ammonia gas dropped lower and lower until it was within ten feet of the ground.
For transportation, they had one jet-powered aircraft, a couple of 'copters, and fifteen ground-crawlers with fat tires, plus all kinds of powered construction machinery. All of them were fueled with liquid HNO , which makes a pretty good fuel in an atmosphere that is predominantly methane.
The seas of Eisberg were liquid methane containing dissolved ammonia. Near the equator, they were liquid; farther north, the seas became slushy with crystallized ammonia. The site picked for the new labs of the Computer Corporation of Earth was in the northern hemisphere, at 40° north latitude, about the same distance from the equator as New York or Madrid, Spain, would be on Earth.
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