The Sun's Light Intensity

Although the Sun is 150 million kilometres away from Earth, its thermonuclear fusion gives us the necessary energy to sustain life. From Earth, we often see the sun as the golden uniform round disk (NOT recommended to see directly as this will damage your eyes, I use camera), but the intensity of light is not constant. During sunspot activities, magnetic field causes disturbance and ejects gas more than million kilometres into the space, thus varying the light intensity towards us. Sunspot activities peak every 11 years and the next peak will be 2022. The following photographs show the clear variation of light on April 13 and September 19, 2014.