How Do You Date a Star?

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Figuring out the age of a blinking speck in the sky is a difficult feat, especially if considering how many types of stars there are. This is where a Hertzsprung-Russell meets a gyrochronologist.

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Sources:
Interview with Eric Jensen from Swarthmore College
https://www.youtube.com/watch?v=IuKZjVlkXRQ
https://chandra.harvard.edu/edu/formal/variable_stars/bg_info.html
https://www.ucolick.org/~bolte/AY4/notes9/node2.html
https://iopscience.iop.org/article/10.3847/1538-4357/ac6035
https://astronomy.swin.edu.au/cosmos/m/main+sequence+lifetime
https://arxiv.org/pdf/0704.3068.pdf

Image Sources:
https://images.nasa.gov/details-PIA19341
https://commons.wikimedia.org/wiki/File:The_star_cluster_Messier_18_and_its_surroundings.jpg
https://commons.wikimedia.org/wiki/File:HRDiagram.png
https://commons.wikimedia.org/wiki/File:A_Hertzsprung–Russell_chart_of_stellar_evolution_(PSF).png
https://hubblesite.org/contents/media/videos/2010/28/647-Video.html?news=true
https://commons.wikimedia.org/wiki/File:Hertzsprung-Russell_Diagram_-_ESO.png
https://www.gettyimages.com/detail/photo/the-sun-royalty-free-image/520222808?phrase=the%20sun%20in%20space&adppopup=true
https://www.researchgate.net/figure/Rotation-periods-of-the-Praesepe-blue-and-the-Hyades-orange-star-clusters-derived-by_fig9_338899735
https://svs.gsfc.nasa.gov/13641
https://commons.wikimedia.org/wiki/File:HRDiagram.png
https://www.loc.gov/resource/gdcwdl.wdl_18412/?sp=48&st=image&r=-0.793,-0.178,2.587,1.653,0
https://commons.wikimedia.org/wiki/File:Suzhou_star_cartography.jpg
https://commons.wikimedia.org/wiki/File:Betelgeuse_(star).jpg
https://www.nasa.gov/mission_pages/hubble/science/stellar_ages.html
https://hubblesite.org/contents/media/images/2004/16/1534-Image.html?news=true