[ELI5] Would something stay hot in the space forever since there is nothing to transfer its heat?

Question

[ELI5] Would something stay hot in the space forever since there is nothing to transfer its heat?

In: 169

Answer 1

Think of space as a big thermal vacuum. It is so cold that heat is pulled away, much like ice in warm water, just as the reverse. If you could heat space to the degree the object is radiating energy then no dissipation would happen.