He predicted the existence of the solar wind which in 1947 he dubbed " solar corpuscular radiation ".
2.
Also detected was the rare occurrence of hard solar corpuscular radiation that could be highly dangerous for manned space flight.
परिभाषा
a stream of atomic or subatomic particles that may be charged positively (e.g. alpha particles) or negatively (e.g. beta particles) or not at all (e.g. neutrons) पर्याय: particulate radiation,