Recent content by Claudio Marchesan

Thanks for the suggestion! My original work on 4-Sphere dates back to June 2020. I can't possibly read everything that's been published on Space.com since then.

4-Sphere is a proper name, but here we also mean the hypersphere embedded in four-dimensional space R4 (someone call it 4-ball too); its surface is named by topologists a S^3 sphere. The speculation includes the chapter: "Ch. 3.5 - GALACTIC COORDINATES". This section is crucial as it describes...

Best, Claudio

Hi Cat, Thanks again for your comments. I’d say we’ve now reached the limits of what can be constructively exchanged in this thread. To clarify one last point: my model assumes a finite, expanding universe with radius r = ct — not a claim about the “true” totality of all that exists, but a...

Hi Cat, Just to clarify: I have no objection in principle to discussing the broader scientific method — it's just that the context here (Hubble law, large-scale geometry, etc.) is fairly well defined and technical. I’d prefer to stay focused on that for now to avoid diluting the thread. One of...

Hi Cat, Thank you for pointing me to your thread — I’ll consider reviewing it as time permits. That said, I believe the core of this discussion remains within the realm of cosmological modeling and spacetime geometry, rather than broader questions about the philosophy or methodology of science...

I’m absolutely happy to define terms and clarify the framework of the model I referred to. No religion is being invoked — quite the contrary, I’m discussing a geometrical representation inspired by general relativity and standard cosmology. By Universe I simply mean what most cosmologists...

Hi Cat, Thanks for your comments. I understand your concerns about definitions, and I agree it's important to be precise — especially in topics like this. Just to clarify: I’m not proposing the existence of an observer outside the universe. When I say the universe “resides on the surface of a...

Thank you for your thoughtful comment. Let me clarify: the phrase "the Universe resides on the surface of a hypersphere expanding at a constant rate" is not meant to imply that there is an external observer watching the universe from outside. Rather, it's a geometrical model — a way to describe...

Cosmology, like other physics, also has a speculative part. One cannot deny the existence of what we don't see. The standard theory defines the Big Bang as a singularity. Can we observe it directly?

Sorry, maybe I didn't understand. Are you denying the Big Bang? If so, then ok, my model contemplates it, if you deny the Big Bang then you deny my model, I have no problem with that.

Our physics cannot directly detect the fourth dimension of space. As you will see if you decide to read, in this work, an alternative approach to the phenomenon of Galactic Redshift is proposed, offering a possible pathway for a careful modification of the ΛCDM model through the adoption of a...

Hi Catastrophe, yes certainly like other models.

Hi everyone, I've noticed with pleasure the growing number of threads on hypersphere cosmology. Although in 1917 Albert Einstein proposed a static model, the idea of a hypersphere cosmology, understood as a spatially closed, finite, and boundless universe, is historically attributed mainly to...

Hi everyone, I have reorganized and completed the previous post and would like to discuss it with the community: The research was uploaded on Zenodo as “Reevaluating the Necessity of Dark Matter and Dark Energy within Cosmological Models” and can be found here: 10.5281/zenodo.15099901. The...