The “white hole” object

I am far from having the expertise of the contributors to this forum: I have some simple ideas.

• Physics is an empirical science based on measurements and observations.

• Consequently, I believe that the phenomena predicted by theory remain mere speculation.

I am particularly curious about white holes.

"A white hole, also known as a white fountain, is a theoretical object that may exist in the sense that it can be described by the laws of general relativity, but whose existence in the universe is considered highly speculative. It is described by certain mathematical solutions of the black hole type in which geodesics originate from a gravitational singularity or a horizon. It would thus form the time-symmetric counterpart of a black hole, since in one case nothing can escape from a black hole, and in the other nothing can enter a white fountain. Technically, this is expressed by the fact that the gravitational singularity that exists within these objects is in the future of the horizon that envelops it (black hole), or in its past (white hole).

The scientific community agrees that the concept of a white hole was introduced into physics by Soviet cosmologist Igor D. Novikov in 1964.

In cosmology, the Big Bang is sometimes considered a white hole." https://fr.wikipedia.org/wiki/Trou_blanc

Artist's impression of a white hole

I would like to read your opinions.