Koronas Foton

CORONAS (Complex ORbital Observations Near-Earth of Activity of the Sun) is a Russian program for study of the Sun and solar-terrestrial connections physics by series of spacecraft, which provides launching of three solar-oriented satellites onto the near-Earth orbit. The main goal of the project is the investigation of energy accumulation and its transformation into energy of accelerated particles processes during solar flares; the study of the acceleration mechanisms, propagation and interaction of fast particles in the solar atmosphere; the study of the solar activity correlation with physical-chemical processes in the Earth upper atmosphere. The powersystem of Koronas-Foton failed in mid January 2010, ending the mission after only one year in orbit.