Cosmic Rays
“Cosmic rays” is a catchall term for various interstellar radiation effects. They use the same rules as radiation (see page 403). Most habitable planets maintain atmospheres capable of repelling these emissions. Such protected planets allow, at most, a low amount of radiation in infrequent bursts. Planets devoid of a protective atmosphere are constantly assailed by radiation of medium to severe intensity.
Source
Core Rulebook pg. 394
