Temperature System How and why do we control heat on a spacecraft?

Why does electrical current make heat?

Electrical current is the flow of electrons through a substance that will permit that flow. The substance is called a conductor. Some conductors are better than others, but none are perfect, and all resist electron flow to some extent. When electron flow is resisted, some of the energy in the electrons does not travel through all the way. Because energy is conserved, the energy that was moving the electrons forward is converted to heat energy. It can also be converted to light energy, as in the filament in a light bulb.

Some substances are better conductors than others. There are certain substances, which when cooled to near absolute zero offer almost no resistance. Those are called superconductors.

What could go wrong on DS1 if there's too much heat?
What is heat?
How does heat move?
How does power get distributed in DS1?
What are batteries?
Where does DS1 get its electricity?
What is an atom?

Why does heat make the electrical system less efficient?
What is a heat source?
What are heat sources in DS1?
How does the shunt vent heat into space?

Where does energy come from and go?
What's a resistor?
How much power does DS1 use? How much power does it produce?