Is a white hole what others called expansion then? And if so, the quantum foam would be compressible and expandible?

Thank you for the link, I'm really interested in white holes. I think they are key for understanding quantum gravity and I even believe our Big Bang could be one: it has a singularity in the past and you'd need to travel back in time to enter it, the exact opposite of a black hole which has a singularity in the future and you'd need to travel back in time to exit it. Not only that but a black hole is "maximum entropy" while our universe started from very low entropy - maybe a white hole's property is to have low entropy, just the opposite of a black hole. I wish more scientists would study black holes seriously as I think they hide in their math something big.

Thank you for the link, anyone has a prediction when it will be found? 50 years or 500?

FRB`s provide proof of white holes.

Many thanks for the reference.