Solar storm behaving just like a supernova … what does this mean?

At http://phys.org/print312113734.html … the headlines read, astronomers find solar storms behave like supernovae. What really are supernovae? Researchers have discovered that coronal mass ejections, or CMEs, behave just like what they can see happening in their telescopes in deep space. A massive eruption on the Sun in 2011 provided some interesting images. The huge ejection of material mostly fell back into the Sun – which appears to parallel what happens during supernova events, large amounts of material falling back with fingers breaking out. The same effect has been seen in the Crab Nebula, the falling plasma undergoing a Rayleigh-Taylor instability as it returned to the Sun's surface reproduced in the nebula.