And they want those detectors to stay on station without rockets. The mission, known as Helianthus, the official name for a sunflower, was initially described at the 6th International Symposium on ...

82, No. 4, Dec., 1926 Effects of X-Rays upon Growth, Developme... 1. Irradiation of soaked seeds of Helianthus annuus causes a slight decrease in percentage of germination. The average total growth of ...