White holes exist too
Contrary to popular belief, white holes exist, albeit they have yet to be seen beyond mathematical theories. White holes are the inverse of black holes; while stuff can exit a white hole, nothing can enter it.
Scientists predict that white holes would be created in the same way as black holes but with the added attribute of a reverse function. However, some scientists have called this idea a figment because it goes against the second law of thermodynamics, which states that general relativity is time-symmetric. Perhaps this could make for a good movie plotline.