White hole

White hole

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Hypothetical image of a white hole
In general relativity, white hole is a hypothetical region of space time. It is completely reverse of a black hole as it is white in color nothing can enter a white hole from outside rather things comes out from a white hole. In reality, nothing like a white hole exists and there is no physical phenomenon that can explain the formation of a white hole. There is a hypothetical theory that tells that white holes are eternal black holes i.e. they are time reverse of black holes. As a black hole attracts everything and absorbs all the matter, a white hole is a black hole rewinding back in time, so everything comes out of the white hole. Theory says that white hole too have mass, charge and angular momentum and hence we may think that they should also attract things towards them, but it is not so, since time flows backward for a white hole and anything moving towards the white hole is actually escaping away from a black hole. It is a well-established fact that nothing escapes from black holes except the Hawkins radiations therefore nothing goes inside a while hole except Hawkins radiations.
Many have a theory that our universe is also a type of white hole and this is the reason for its continuous expansion.

concepts of general relativity, eternal black hole theory, postulates of general theory of relativity, hypothetical regions of space time, reverse of a black hole, time reverse of black hole, black hole rewinding back in time, flow of time in white holes, white hole vs black hole, white hole theory, what is a white hole in space, what is a white hole made of, white hole definition, white hole explained simply, difference between black hole and white hole, white hole, what are white holes in astronomy
Though a white hole is considered impossible but now some predict that the Ralph’s Gamma Ray burst (GRB 060614) which was observed by NASA’s Swift satellite in June 2006 was a result of a white hole, as no cosmic activity of the size of supernova, which may result in such long ray bursts was recorded in the region. These bursts are said to be originated from nowhere.
Related Articles: Black hole, Exotic Star, White Dwarf, Flipping of Solar Magnetic Poles, Space-time, Astronomical Unit, Supernova, Red Giant, Nebula

Credits: Image Source- Google Images

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