DICIEMBRE SOLAR ▲ ScienceCasts: The Mystery of Coronal Heating

ScienceCasts: The Mystery of Coronal Heating
Visit http://science.nasa.gov/ for more. Observations by NASA's IRIS spacecraft suggest that "heat bombs" are going off in the sun's outer atmosphere, helping to explain why the solar corona is so mysteriously hot. https://iris.gsfc.nasa.gov/