One last question, if someone knows: Turner & Gott 1976 were on the right track with density-based clustering, why was this changed to single-linkage ("friends-of-friends") over the course of time? From what I understand now, it was a change for the worse...

#HistoryOfCosmology #Cosmology #GalaxyCluster

Happy belated birthday to the #CosmologicalConstant whatever you are in this #Universe !
#OTD February 8th, Einstein submitted this paper: https://einsteinpapers.press.princeton.edu/vol6-trans/433 which is one of the rare cases in which he writes about #cosmology
Moreover, it also shows his pioneering thinking because he introduces what will later be known as the #CosmologicalPrinicple in this work, too!

#HappyBirthday #science #astronomy #astrophysics #HistoryOfCosmology

For everybody who happens to speak German and wants to attend an outreach talk about the boundaries of our cosmological knowledge, next Monday is your chance to meet and discuss with me here: https://astronomiemuseum.de/termindetails?termin_id=709

#science #AstronomyOutreach #cosmology #German #PhilosophyOfCosmology #HistoryOfCosmology

Was the Earth the supreme centre or the dregs…the lowest region of the cosmos in the Early Modern Period? #HistoryOfAstronomy #HistoryOfCosmology #histSTM
https://thonyc.wordpress.com/2023/05/03/a-cosmologist-screws-up-the-history-of-cosmology/

Was the Earth the supreme centre or the dregs…the lowest region of the cosmos in the Early Modern Period? #HistoryOfAstronomy #HistoryOfCosmology #histSTM

Was the Earth the supreme centre or the dregs…the lowest region of the cosmos in the Early Modern Period? #HistoryOfAstronomy #HistoryOfCosmology 'histSTM
https://thonyc.wordpress.com/2023/05/03/a-cosmologist-screws-up-the-history-of-cosmology/