First of all ,white hole is a hypothetical concept . We know the newton law ,everything has a equal and opposite reaction . When we deal with the universe we have already discovered a lot of concepts and theories.In space the laws of thermodynamics ,the theory of relativity ,laws of gravitation ,laws of motion, are entangled together . Every time with a new discovery we cannot prove the earlier theory wrong . We know a black takes in everything , it even swallows light ,but if we see our physics laws it cannot be true . Every body which takes in energy , releases energy , our own body release heat . Stephen hawking realized this fact and made us believe that there is something opposite to black hole which is called a white whole . It is believed that white hole is present in an another dimension i.e nothing can enter a white hole , things can only escape from it.
From the gravitational pull concept we can say that black holes are really dangerous . Five-sixths of our universe is made up of dark matter and the the theory behind it is still hidden . According to a recent study it was believed the dark matter constituted white holes , they can be as small as possible and even as big as possible. It is believed that a black hole and white hole makes a connection between a new dimension or an another universe. Hypothetically if we enter a black hole we emerge in a new universe from a white hole , but we all know if by chance we enter the event horizon of a black hole our body is torn apart with the huge gravitational pull.White holes can be as massive as possible and can be as small as a bit of a human hair . It is believed that if a very tiny white hole comes in contact with a proton in space it just bounces off as it cannot swallow anything and if it comes in contact with a black hole , then it just a black hole. As of now white holes cannot be taken dangerous , but it still remains a mystery . It is also believed that the big bang theory predate from a huge white hole.The white holes smaller than the wavelength of light are invisible like the dark matter and is believed to be a constitute of dark matter.Till dark matter remains a mystery , white hole is also a mystery.Maybe they come out to be more dangerous than a black hole.
so basically you cannot enter a white hole from this region of space time , its like you just collide with a white hole and you did’nt even realize that you collided with something .
Shristi uniyal 