Here's Cordelia's question:

How do you use electricity in space? 

MAGNUS: We get our electricity from solar power. We have three, soon to be four, solar arrays which collect solar power and feed the electrical system. We have banks of batteries out on the arrays that store the extra power for use when we are in a night pass. Our fundamental voltage is 120V but different experiments and equipment can step that down to 28V, 16V, or whatever is needed.