"Why Is The Sun So Hot?" Is a Real Question Scientists Still Have

The fact that the sun is hot should not be news to a single person. The sun's surface is about 10,000 degrees Fahrenheit, which seems toasty enough. But surrounding the sun is an atmosphere of sorts called the corona. This envelope of superheated gas -- plasma, actually -- measures more than 3 million degrees. And scientists are still trying to figure out how this outer layer is so much hotter than what lies beneath it.The part that confuses scientists is quite simple: Since the sun's he