Looping magnetic fields in this region form areas with long, pointed peaks known as helmetstreamers.
Looping magnetic fields in this region form areas with long, pointed peaks known as helmetstreamers. Bernard Lyot invented the first method for continuous imaging of this region. Spectrallines produced in this region were initially attributed to an unknown gas named after it, but werelater determined to come from ionized iron. Lockyer and Frankland's studies of this region led totheir coining the term (*) "helium" for a gas first observed here. "Holes" in this region are the origin ofthe solar wind, bursts of which include this region's namesake "mass ejections." This region is seen whenthe moon blocks out the photosphere during a solar eclipse. For 10 points, name this outermost layer of theSun.
Looping magnetic fields in this region form areas with long, pointed peaks known as helmetstreamers.
corona [prompt on "Sun"]