Topic Tag: Hubble Cepheid variable in M31 Search for: › Forums › Topic Tag: Hubble Cepheid variable in M31 Viewing topic 1 (of 1 total) Topic Voices Posts Last Post Hubble’s Cepheid variable in M31 Started by: Denis Buczynski in: History 2 3 2 months ago Mark Robert Thurston Viewing topic 1 (of 1 total)