The thermosphere and the ionosphere are roughly the same and have their names based upon what you are investigating. If it is temperature, then it is the "thermosphere." If you are looking a ions (charged particals like electrons), then it is called the ionosphere. The lower part of the ionosphere (region "E") is where the aurora (borealis and australis) take place.
Solar Eruptions - A Coronal Mass Ejection - This particular Mass Ejection is traveling at over 900 miles per second and has an energy level equivalent to 160,000,000,000 megatons of TNT: NASA/Solar Dynamics Observatory/Goddard Spaceflight Center