The discussion centers on the concept of a finite universe, particularly the idea that it can exist without an edge, akin to the surface of a sphere. Participants argue that while a finite universe is plausible, it challenges common intuition and is difficult to visualize. The conversation also touches on the multiverse theory and the ongoing debate within the cosmology community regarding the nature of the universe, with references to influential works such as Janna Levin's "How the Universe Got Its Spots" and the evolving perspectives of prominent physicists like Leonard Susskind and Lisa Randall.
PREREQUISITESCosmologists, theoretical physicists, and anyone interested in the philosophical implications of the universe's structure and the ongoing debates in modern cosmology.
sketchtrack said:I have always been told the universe is expanding faster than C. Isn't the expanding space rather than moving galaxies thing just to satisfy the hypothesis that mass cannot move faster than C?