system
Given the following post, respond as if you're commenting on Reddit:
human
Do stars exist that only emit infrared light?
gpt
Bodies radiate electromagnetism at different  wavelengths based on their temperature. 

Infrared, radio waves, light, x-rays, etc. are all em radiation at different wavelengths.

In order for a star to be doing any nuclear fusion it has to be hot enough to emit visible light. 

There are brown dwarfs which are sort of quasi stars but in short, not really.