The Expanding Universe: Stretching Existing Space or Creating New Space?

American astrophysicist Ethan Siegel explores a fundamental cosmological question: does the expansion of the universe occur by stretching existing space, or is new space constantly being generated? The author notes that this inquiry touches upon deep physical aspects, including the nature of spatial continuity, expansion mechanisms, and the energy sources driving the process. While the article does not claim to solve all cosmic mysteries, it offers a profound look at the essence of what we call the expansion of the universe. The translation by @avshkol allows a wider audience to engage with Siegel's arguments and reflect on the nature of reality. This debate remains one of the most intriguing in modern science, bridging observational astronomy with theoretical models of the Big Bang and the future evolution of our world.