Dr Chris Davis from the UK's Rutherford Appleton Laboratory underlined the power of CMEs.

BBC: NEWS | Science/Nature | Spacecraft go to film Sun in 3D

Flares are associated with huge eruptions of matter from the Sun's atmosphere - known as coronal mass ejections (CMEs).

BBC: Four colossal Sun flares in 48 hours

CMEs are often, but not always, accompanied by solar flares, which are huge ejections of radiation from the Sun.

FORBES: NASA Reports That Solar Flares Could Disrupt Power, Communications

The two CMEs are heading towards Earth and are expected to hit in the wee hours of the morning on March 8.

FORBES: NASA Reports That Solar Flares Could Disrupt Power, Communications

This afternoon, NASA estimated that the CMEs will collide with Earth at around 1:25 AM EST on the morning of March 8.

FORBES: NASA Reports That Solar Flares Could Disrupt Power, Communications

These CMEs can be even more disruptive because they are capable of sending billions of tonnes of charged gas and other particles into space.

BBC: Four colossal Sun flares in 48 hours