On Feb. 27, 1942, in the midst of World War II, sudden, severe interference struck anti-aircraft radar stations on the coast of England. The obvious answer seemed to be a new German signal-jamming tactic. But physicist James Stanley Hey of the Army Operational Research Group realized that the signals started at sunrise and ended at Continue reading "Feb. 27, 1942: The birth of solar radio astronomy" The post Feb. 27, 1942: The birth of solar radio astronomy appeared first on Astronomy Magazine .