Temperature System

How and why do we control heat on a spacecraft?

What is a heat sink?

A heat sink is anything that allows heat to escape into space from a spacecraft. Ideally, the amount of heat leaving a spacecraft system via heat sinks and the amount entering from heat sources should balance. Thus, the spacecraft's heat balance should remain steady.

Why do we have to control heat on a spacecraft if there are no people on board?
How is DS1's heat balance maintained?
What is heat?
How does heat move?

What is heat balance?
What is a heat source?
How do passive heat sinks work?
How do active heat sinks work?
What are heat sinks in DS1?

What happens to the heat once it is released into space?
Where does energy come from and go?