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TeachMeFinance.com - explain supernova supernova The term 'supernova' as it applies to the area of space can be defined as 'The death explosion of a massive star, resulting in a sharp increase in brightness followed by a gradual fading. At peak light output, supernova explosions can outshine a galaxy. The outer layers of the exploding star are blasted out in a radioactive cloud. This expanding cloud, visible long after the initial explosion fades from view, forms a supernova remnant '. Previous 5 Terms: Supercritical reactor Supercriticality Superfund Superfund Amendments and Reauthorization Act (SARA) Superheating Next 5 Terms: Superrefraction Supershot Supervisory control Supervisory Control and Data Acquisition (electric) Supplement About the author Mark McCracken Author: Mark McCracken is a corporate trainer and author living in Higashi Osaka, Japan. He is the author of thousands of online articles as well as the Business English textbook, "25 Business Skills in English". Copyright © 2005-2011 by Mark McCracken, All Rights Reserved. TeachMeFinance.com is an informational website, and should not be used as a substitute for professional medical, legal or financial advice. Information presented at TeachMeFinance.com is provided on an "AS-IS" basis. Please read the disclaimer for details.