02. Is it unlimited? How much is there? (A K2S Question)

From The Space Library

Electricity will not exactly be unlimited in space. Fuel cells change two elements—oxygen and hydrogen—into electricity. So as long as we have these two elements we can generate electricity forever. If we use solar panels, we will always have electricity as long as there is sunlight. Nuclear energy lasts a long time. But we can't say it is unlimited, because it will depend on how much we use. The amount of electricity we have will depend on a number of things: how much we can generate; how much we use at any one time; and how much fuel we have. We can't have unlimited fuel, because fuel has weight and mass, and that takes up room. So, probably each person traveling in space will have a certain amount of electricity that they can use each per day.

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Answer provided by John Cavallaro

Question and Answer extracted from the book Kids to Space - by Lonnie Schorer

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