A space storm would have the power to completely knock out the world’s power grid, causing devastating global effects
The most devastating storm, a coronal mass ejection, can send billions of tonnes of matter speeding through space at more than seven million mph before they explode.
And an expert has revealed that once a mass ejection leaves the sun, we would only have 15 minutes until it hit earth.
Met Office space weather programme manager, Catherine Burnett, told The Mirror: “Coronal mass ejections can travel in any direction from the sun.
“If they are heading your way their size means they would completely engulf the Earth.
“It takes a significant coronal mass ejection 19 hours to travel to the Earth. But once we have seen a coronal mass ejection leave the sun we still will not know until 15 minutes before it reaches Earth what its magnetic orientation is and if we will see any impact.
The mass ejections are caused by a giant cloud of plasma being shot from the sun into space.
The most famous solar storm is the Northern Lights, which are visible from late September until March and are best seen in Iceland.
The Earth hasn’t been hit by a solar storm since the mid 19th-century, but major storms are thought to hit every 100 years, so one could be on the way.