Tootfinder

Lithium-rich #Cepheid V470 Cas: https://www.aanda.org/articles/aa/full_html/2024/03/aa49022-23/aa49022-23.html -> UH Hilo astronomer leads discovery of extremely rare property in star: https://www.hawaii.edu/news/2024/04/30/discovery-of-extremely-rare-property-in-star/

100 years ago #OTD Edwin #Hubble mailed the light curve of a #Cepheid in Messier 31 to Harlow Shapley who allegedly (a report about his immediate reaction was only published many decades later; contemporary sources seem lacking) immediately accepted the existence of other galaxies - a timeline of events related to this key insight based on numerous sources: https://www.facebook.com/dan.fischer.393/posts/pfbid02D7dy3mNRVXa9fi8mWeY5q6KJrUnMcSPi62CYejCLy5ha2XPhH6wXJsNgN5aHLvcAl (corrections and additions, especially about other reactions, for the years 1922 to 1926 welcome).

100 years ago #OTD Edwin #Hubble mailed the light curve of a #Cepheid in Messier 31 to Harlow Shapley who allegedly (a report about his immediate reaction was only published many decades later; contemporary sources seem lacking) immediately accepted the existence of other galaxies - a timeline of events related to this key insight based on numerous sources: https://www.facebook.com/dan.fischer.393/posts/pfbid02D7dy3mNRVXa9fi8mWeY5q6KJrUnMcSPi62CYejCLy5ha2XPhH6wXJsNgN5aHLvcAl (corrections and additions, especially about other reactions, for the years 1922 to 1926 welcome).