Reply To: Supernova in M101 ! › Forums › Variable Stars › Supernova in M101 ! › Reply To: Supernova in M101 ! 21 May 2023 at 12:26 pm #617439 Robin LeadbeaterParticipant The earliest pre discovery detection I have seen now pushes back the time of explosion to at least 2023-05-18 T 21:55 (from an image posted on the Cloudy Nights forum)
