Why is the sun's atmosphere so much hotter than its surface? To help solve this mystery, a NASA scientist recently analyzed satellite images of the sun in a way that yielded colorful strokes reminiscent of a Van Gogh painting. But this is science, not art. Each processed, color-coded image shows how material in the sun's atmosphere changed temperature over a 24-hour period. Red, yellow and orange were chosen to represent areas that cooled, while blue and green highlight areas that warmed. Watch the videos to see a gallery of these scientific works of art and learn how they were made.