Star of the Week

Since I'm taking a tour of the solar system, I might as well mention its most important member. Here she is during a total eclipse. I have never seen a total solar eclipse but I have heard it said that the sun's corona is the most spectacular sight one can ever view.

Like most stars, the sun's output varies over time. The effects of the variation have been observed on the other planets in our system, as well as on the earth. Since the sun is the primary source of all of our light and heat, does it not make sense to consider the variations in its output as a potential cause of the slight warming the earth has experienced (about one degree celsius over the last 150 years)?