I knew about them because of a doubt I had about the Energy Conservation Law, it turns out that my question was:
"According to this conservation law, energy is not created or destroyed, it is only transformed ... So, if the universe is constantly expanding, would not this result be a clear creation of energy? Or would it just be transformation of it?"
Before this doubt I spoke with a professor and he mentioned the white holes as a possible source of expansion of the universe itself.
They are just the opposite of black holes ... Ok, we all know black holes, or at least, we have an idea of what they are (Yes, they are those who swallow everything), then all of that, hypothetically, would have to come out on the other side ... Boom! That's where the white holes come in ... A kind of temporary exit from black holes
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