NASA/SDO
Astronomy

All Eyes on the Sun's Mysteriously Superhot Corona During Great American Eclipse

The total solar eclipse that will span the US on Aug. 21 will give scientists a clear look at the solar corona, an atmospheric halo of plasma that is 200 times hotter than the sun's surface.

Published On 08/11/2017
12:30 PM EDT
S S olar eclipses actually aren't all that rare. The orbits of the moon and the sun align so the moon’s shadow falls on Earth about every 18 months, on average. But it can take a lifetime for you to wind up at just the right place at the right time to experience the full effect of a total solar eclipse.