Here is something else we recently learned:
Dec. 13, 2010: On August 1, 2010, an entire hemisphere of the sun erupted. Filaments of magnetism snapped and exploded, shock waves raced across the stellar surface, billion-ton clouds of hot gas billowed into space. Astronomers knew they had witnessed something big.
http://science.nasa.gov/science-news/sc ... leruption/
Looking at the NASA video in the link above, one can see at least three shock waves racing across the surface of the sun.
Long ago researchers thought solar flares were isolated events. ... The Solar Dynamics Observatory's global view of the sun has shown, however, that widely-separated sunspots can explode in tandem. That's what happened on March 20, [2014] when AR2010 and AR2014 combined for a double flare:
http://www.spaceweather.com/archive.php ... &year=2013
Our own earth has its own thermo-nuclear reactor at its core. When we have experienced a huge earthquake, shock waves are sent out that can trigger other earthquakes. In water, we see the formation of tsunamis.