system
Given the following post, respond as if you're commenting on Reddit:
human
Would a spacecraft be visible in deep space?

Say for example you are right between the sun and Proxima Centauri. Would there be enough ambient light from surrounding stars in deep space to make your spacecraft visible? If so, how much would you be able to see? I think it's interesting because in science fiction movies, spacecraft are almost always beautifully lit up, regardless of where in space they might be. How realistic is this?
gpt
Ambient light? Certainly not. We detect almost everything that is far away from radioactive emissions or infrared emissions.

Even at pluto, the amount of ambient light is very very small. 

However, if your ship were constantly emitting a radio signal in the direction of earth, and we were actively detecting that frequency, it's possible that we might detect the craft.