NASA Rocket Findings Could Solve Mysteries About Sun's Hot Outer Atmosphere

Scientists working on NASA's Extreme Ultraviolet Normal Incidence Spectrograph, or Eunis, mission recently gathered some strong evidence that could explain why the sun's outer atmosphere is much hotter than its surface. The new observations support a current theory about "a constant peppering of impulsive bursts of heating," which are called "nanoflares."