Radiation within the visible spectrum can appear black if it is low in power – more specifically, lower in power than its ...

Cathleen Lewis: White is the color that reflects back the radiation most effectively while in outer space. Narrator: Here on Earth, our atmosphere shields us from 77% of the sun's radiation.

It left a 30-kilometer exclusion zone—a deserted landscape where high radiation levels remain even now, decades after the incident—where human settlement and habitation are restricted.