Part 3/8:
However, recent perspectives argue that this notion of a singularity may be fundamentally flawed. Current evidence supports the existence of a hot, dense early universe, as exemplified by the Cosmic Microwave Background radiation. This relic provides a glimpse of the universe as it was only a few hundred thousand years after its inception, undermining the idea of a singularity as the definitive beginning.
The framework we once relied on, primarily through general relativity, illustrates the universe contracting back to this singular point. Yet, if space is infinite, even a massive contraction does not yield a singularity, but rather leaves us with an infinitely dense and hot universe without space collapsing into a literal point.