Experts are warning that another solar-superstorm on the scale of the 1859 Carrington event is inevitable.
The Earth was hit by a tidal wave of energetic particles following a large solar flare.
An example of an eruption associated with solar flares on the sun.
A new report from the Royal Academy of Engineering has suggested a UK Space Weather Board is needed, to lead and supervise government strategy for coping with such a radiation blast if it were to happen again.
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A man with a knife has been arrested near Buckingham Palace in an incident Scotland Yard said was not believed to be terror related.