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PhiJ
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I have read in wikipedia and other places that white holes cannot exist as they violate the second law of thermodynamics. I s'pose my question is a simple one. How?
A white hole is a hypothetical object in space that is the opposite of a black hole. Instead of sucking in matter and light, a white hole is thought to eject matter and light outwards. It is essentially the reverse of a black hole in terms of its gravitational effects.
The 2nd Law of Thermodynamics states that entropy, or disorder, in a closed system can never decrease over time. White holes are thought to violate this law as they would essentially be creating order by ejecting matter and light outwards. This goes against the natural tendency for systems to become more disordered over time.
While white holes are a concept in theoretical physics, there is currently no evidence to suggest that they actually exist. They are still a topic of debate and research among scientists, and their existence has not been proven or disproven.
It is currently unknown what would happen in a scenario where a white hole and a black hole were to collide. Some theories suggest that they would cancel each other out, while others propose that they could merge to form a larger black hole. However, since white holes have not been observed, this remains a purely speculative question.
There is no evidence to suggest that white holes can be used for time travel. While some theories propose that white holes may have a connection to wormholes, which have been theorized as potential pathways for time travel, these are still highly speculative and have not been proven.