Another trick, which I haven't really appreciated for a long time, is that it's VERY dark in the radio frequencies. Black bodies radiate barely any energy there

Another trick, which I haven't really appreciated for a long time, is that it's VERY dark in the radio frequencies. Black bodies radiate barely any energy there. It's quiet so if you shout even moderately loudly you can be heard halfway across the globe. It's permanently night and even small lamp shines quite far.