“When the Earth is engulfed in a CME it can have deleterious impacts on humans systems such as power distribution systems, navigation and communications systems, satellite control systems etc.”
During a coronal mass ejection, the Sun can throw out billions of tons of solar material out into space.
If the CME is directed towards our planet, the charged particles will interact with Earth’s magnetic shield or magnetosphere.
According to the US space agency NASA, the CME’s magnetic fields can peel back the outermost layers of Earth’s defences.
And though the Sun is located about 93 million miles (149.6 million km) from Earth, CMEs can reach us in as little as one to three days.
source: express.co.uk