The last known large scale 'solar-superstorm' occurred in 1859, but is likely to occur every one to 200 years.
In the Carrington event, sparks were sent flying from telegraph pylons, causing fires, as energetic currents from the blast hit the earth.
Night skies were lit up by aurora displays, following a large solar flare.
At that time, there were no satellites in orbit or sensitive microchips in the path of the particles.
If an event of this scale were to hit today, the electricity grid could be affected, along with aircraft and navigation systems.
More top news
The success of the No camp is mainly due to Tsipras convincing people a No vote will strengthen their hands in negotiations.
As we move into the weekend, expect things to get rather more unsettled weather-wise - thought it will stay hot and humid for some.
More than 80 prominent Britons, including Boris Johnson, Russell Brand and former Government ministers, urge Obama to release Aamer.