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1. Stephen Sekula (steve)'s status on Sunday, 18-Sep-2016 15:43:22 EDT Stephen Sekula

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   For the record, the Hertzsprung-Russel (HR) diagram is one of the coolest things ever. Get to know a star today. https://chirp.cooleysekula.net/attachment/15611
   • Former Bob Jonkman -- Please use the new server at https://gs.jonkman.ca (bobjonkmanformer)'s status on Sunday, 18-Sep-2016 20:01:31 EDT Former Bob Jonkman -- Please use the new server at https://gs.jonkman.ca

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     • Stephen Sekula
     Just the sort of poster I'd like to have framed in my office! https://chirp.cooleysekula.net/file/db3cd0aba109f1da7660256c60cfebacaf3198c488b299dbd7af79c946dc6680.png
   • Former Bob Jonkman -- Please use the new server at https://gs.jonkman.ca (bobjonkmanformer)'s status on Sunday, 18-Sep-2016 20:04:15 EDT Former Bob Jonkman -- Please use the new server at https://gs.jonkman.ca

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     • Stephen Sekula
     @steve I'm curious how the age of the stars would appear on this diagram. Would there be regular iso lines for age, as there are iso lines for radius?
   • Stephen Sekula (steve)'s status on Tuesday, 20-Sep-2016 17:22:15 EDT Stephen Sekula

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     • Former Bob Jonkman -- Please use the new server at https://gs.jonkman.ca
     @bobjonkman Age is a separate axis. For instance, stars (once nuclear burning begins) spend 90% of their lives at a fixed location on "main sequence". Once they end hydrogen fusion, they leave the main sequence and begin a process of zig-zagging back and forth above and to the right of the main sequence, fusing heavier and heavier elements. What happens after that depends…