Live fast, die young, and leave a good looking corpse. No we're not talking about rock stars, but stars in the night sky. Some stars burn much more intensely than others and there is a system to classify these stars, which started out as simple alphabetical order, but as one letter classification rose above another a string of letters emerged to show what stars burned the most intense and which stars burned cooler. Find out how hot an O star is compared to an M class star on this weeks SkyTalk.

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