system
Given the following post, respond as if you're commenting on Reddit:
human
Do black holes have a temperature?

Does the question even make sense?
gpt
Yes, they do.  This was a major theoretical discovery of Hawking's, following on work by Bekenstein regarding black hole entropy.  This temperature enables black holes to emit particles and thus energy.

The temperature of a black hole is inversely proportional to its mass, so a large black hole has a small temperature, and a small black hole has a large temperature.

Black holes that we've observed have tiny temperatures.  Even a black hole with a mass equal to that of the Moon would have a temperature less than 3K.