The Mystery of “M” In this episode of Starcast, hosts Jay Shaffer and Mike Lewinski discuss recent solar activity, upcoming celestial events, and the history of astronomical catalogs such as the Messier and New General Catalog. Episode Links: https://earthsky.org/clusters-nebulae-galaxies/what-are-messier-objects/ https://astrodaily.mro.nmt.edu/2020/08/11/the-messier-catalogue-the-masterpiece-in-the-mess/ https://www.space.com/16686-charles-messier-biography.html http://www.messier.seds.org/xtra/marathon/marathon.html https://donmachholz.com/messier-marathon/ https://en.wikipedia.org/wiki/Great_Comet_of_1744https://georgebishopjr.com/2013/07/03/cheseauxs-comet-of-1744/