Before understanding White Hole, you need to have some knowledge about Black Hole. Black Hole is a mysterious place of space which has a large amount of mass in a small place where gravity is Unimaginable high that nothing can come out from there even if it is the light particle. That’s why we can’t see the whole black hole except its outside part which called horizon. The picture we got 10th April, 2019 is just a picture of its shadow. At first, John Michelle gave an idea about Black Hole in 1784. After that, in the 19th Century, Albert Einstein also proved it theoretically. But alongside Black Hole, he also gave an idea about White Hole which more mysterious than Black Hole. Maximum scientist do not believe White Hole theory due to its working principle.
According to many conventional theories of Black Hole, one is- Every matter enters into Black Hole never return. But it also said by Isaac Newton that matter cannot create or destroy. It only changes one form to another. From this, the White Hole doctrine come. Stephen Hawking proved that Black Hole radiate energy and evaporate. That means Black Hole is not permanent in the universe. So what happened to Black Hole after evaporation? That means Black Hole is not permanent in the universe. So what happened to Black Hole after evaporation? One theory is come from. Black Hole turns White Hole after evaporating and get out every matter from it. Many Scientists believed that our earth created from a evaporate Black Hole.