White holes exist too
There are in fact white holes, except they have never been seen or proven beyond the mathematical theories formed from the theory of general relativity. The concept of white holes is the reverse of black holes. White holes allow everything within it to freely escape but allow nothing to enter it.
Theory predicts they would be formed the same way as black holes and have the same attributes minus their reverse function. However, scientists have tagged this a figment idea, particularly because the concept and functioning of a white hole will go against the second law of thermodynamics which states that general relativity is time-symmetric. Maybe this could be a new movie idea.