THE SUN’S CORONA BY NUMBERS

10 MILLION

times less dense than the surface of the Sun

10 BILLION

times less dense than Earth’s atmosphere at sea level

300

times hotter than the lowest layer of the Sun’s atmosphere

1 MILLION

Minimum temperature of the corona in Celsius

400

KILOMETRES PER HOUR

Speed at which corona particles are transported through space by solar wind

7,200,000

KILOMETRES PER HOUR

Fastest recorded coronal mass ejection