Since the 1950s, the sun has shown a phase of extraordinary activity. It is at this conclusion that researchers of
the Max Planck Institute for Solar System Research, in collaboration with Finnish scientists, in an article published in the journal "Physical Revew Letters". The temporal development of solar activity seems to follow very closely that of the average temperature at the earth's surface, which accounts for the influence of the sun on the earth's climate. However, researchers have shown that the global warming of the past 30 years can only be partially attributed to solar activity. As a result, while solar activity influences the climate, it has only played a minor role in recent global warming.