3 ms·
The black space is at about 3 Kelvin temperature. A Dyson sphere would necessarily (the star inside would heat it) have a much higher temperature than mere 3 K
by sampo 13y ago
The black space is at about 3 Kelvin temperature. A Dyson sphere would necessarily (the star inside would heat it) have a much higher temperature than mere 3 K above the absolute zero. Thus it would radiate heat according to whatever its temperature, and be quite distinct compared to the cold back space background.
- abrichr 13y agoThis is assuming that the creators of the Dyson sphere haven't also figured out how to absorb the heat energy with extremely high efficiency.