In principle heat can be gotten rid of with radiators, like the EATCS[1] on the International Space Station. To maximize the heat radiated away, you'd need rad

In principle heat can be gotten rid of with radiators, like the EATCS[1] on the International Space Station. To maximize the heat radiated away, you'd need radiators with as much surface area as possible with an unobstructed view of the sky (no cloud cover). They'd also need to be as hot as possible, because thermal radiation power rises with the 4th power of absolute temperature There have been attempts to detect such thermal radiation from alien civilizations[2]. [1] https://en.wikipedia.org/wiki/External_Active_Thermal_Control_System https://en.wikipedia.org/wiki/External_Active_Thermal_Contro... [2] https://arxiv.org/abs/1408.1134 https://arxiv.org/abs/1408.1134