Sun - NASA

Sun - NASA

Originally downloaded from

http://sciencedude.ocregister.com/2012/01/31/nasa-warming-driven-by-huma...

Image Caption: 

During a recent 'solar minimum,' the sun's energy was diminished, and the sun's surface was left almost entirely without sunspots, as shown in this NASA image. But Earth continued to absorb more solar energy than it emitted.

Image Rights: 

NASA