# When did scientists discover that the Sun has a life cycle and that it is going to die?

I have been researching the history of scientific studies about the the Sun. However I have been unable to find out much information about how the scientific consensus started forming around stars' life cycles.

I know that it has been known since Galileo that some star have sudden changes in luminosity during their life. But I was unable to find out when scientists actually discovered that stars are born and die, and especially how this influenced the view on the future of the Solar System.

I suppose this happened somewhere at the start of the 20th century, when more information and research about supernovae was being found, but I couldn't find more precise information about it.

• Not an answer to your question but here's a recent question I asked about when it was discovered that our sun won't go supernova which may be of interest and gives some leads astronomy.stackexchange.com/questions/36802/… – Wiggo the Wookie Sep 11 '20 at 13:50
• I’m voting to close this question because I recommend migration to HSM.SE (history of science....) – Carl Witthoft Sep 11 '20 at 15:12
• @CarlWitthoft Unlike physics.SE, history questions are on topic in this corner of the StackExchange. There is even a tag for just that. – David Hammen Sep 12 '20 at 3:49
• @CarlWitthoft if after reviewing the 154 questions here tagged history you still feel that astronomy history questions should be off-topic and perhaps all of those questions closed, then you can advocate for that in a question in Astronomy Meta. – uhoh Sep 12 '20 at 4:28
• @CarlWitthoft - See also this question on Meta about whether history of astronomy questions are on-topic here. – user24157 Sep 14 '20 at 22:29