Answer:
Solar flare
Explanation:
In the Sun when there is an sudden increase in brightness which is generally accompanied by a coronal mass ejection it is known as a solar flare. Solar flares occur close to Sun spot.
Coronal mass ejection is the release of matter (plasma) with a strong magnetic field from the corona of the Sun.
The energy they release ranges between [tex]10^{20}-10^{25}\ Joules[/tex] which is comparable to 100-megaton hydrogen bombs exploding simultaneously
