The opposite of a black hole would be a white hole. While a black hole is a region of space where the gravitational pull is so strong that nothing, not even light, can escape from it, a white hole is a hypothetical region of space where matter and energy can only leave and not enter.
While black holes are formed by the collapse of a massive star, white holes are not thought to be formed in the same way. Instead, they are predicted by some theoretical models of the universe as a possible consequence of the laws of physics. However, there is currently no observational evidence for the existence of white holes.
While black holes are formed by the collapse of a massive star, white holes are not thought to be formed in the same way. Instead, they are predicted by some theoretical models of the universe as a possible consequence of the laws of physics. However, there is currently no observational evidence for the existence of white holes.