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Today's Coronal Hole on the Sun truly reminds me of Big Bird. 

Coronal holes are regions where the corona is dark. These features were discovered when X-ray telescopes were first flown above the earth's atmosphere to reveal the structure of the corona across the solar disc. Coronal holes are associated with "open" magnetic field lines and are often found at the Sun's poles. The high-speed solar wind is known to originate in coronal holes.

The solar wind escaping from this hole will reach Earth around June 5 - 7. 

Credit: NASA SDO (without the Big Bird in it)

#NASA   #SDO   #Sun  
David Danehower's profile photoHector Socas-Navarro's profile photoLiz Krane's profile photo
+Paul Podhorn, Jr. , it's the other way around. The closed loop field lines that form the solar corona keep the plasma confined. Coronal holes consist of (quasi-)open field lines and the plasma can escape freely along those open lines
#cannotunsee  and glad :)
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