• Aura of plasma that surrounds the Sun and other stars
  • Several million kilometers above the chromosphere
  • Very hot
    • Million degrees or more
  • Heated by Sun's magnetic field
  • 10 trillion times less dense than the sea level atmosphere on Earth
  • Gases in this layer get blown into space
  • Emits about half as much light as the Moon when it is full

Sun Atmosphere Astronomy