Credit/Permission: © Carlos A. Bertulani, 2014 (uploaded to Wikimedia Commons by User:Rcsprinter123, 2014) / Creative Commons CC BY-SA 3.0.
Image link: Wikimedia Commons: File:Representative_lifetimes_of_stars_as_a_function_of_their_masses.svg.
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File: Star file: star_lifetimes.html.