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Einstein was RIGHT about black holes, new experiment finds. When cosmic material is pulled too close to a black hole, the matter is completely swallowed in an event horizon, causing it to ‘disappear from the observable universe.’But, some have suggested instead that a mysterious supermassive object may exist at the center of galaxies in place of a black hole – meaning infalling material would crash into its hard surface, to be destroyed in a dramatic impact. In a new study now said to be another successful test of Einstein’s general theory of relativity, researchers found little evidence to support the ‘hard- surface theory,’ instead concluding that ‘some, and perhaps all’ black holes have event horizons. When cosmic material is pulled too close to a black hole, the matter is completely swallowed in an event horizon, causing it to ‘disappear from the observable universe.’ This phenomenon is illustrated above THE 'HARD SURFACE' THEORY  According to the researchers at the University of Texas at Austin and Harvard University, the 'hard- surface theory' is based on modified versions of Einstein’s General Relativity. In this situation, a supermassive object would have somehow avoided gravitational collapse to a singularity surrounded by an event horizon.

And, the object would have a hard surface. If a mysterious supermassive object were to exist at the center of a galaxy instead of a black hole, this means infalling material would crash into its hard surface, to be destroyed in a dramatic impact. ‘Our motive is not so much to establish that there is a hard surface, but to push the boundary of knowledge and find concrete evidence that really, there is an event horizon around black holes,’ said Pawan Kumar, a professor of astrophysics at the University of Texas at Austin.

To find out which theory is correct, astronomers from the University of Texas at Austin and Harvard University first determined what a telescope would see if a star collided with the surface of a supermassive object. Then, they estimated how often the phenomenon would be detected in the nearby universe. Finding this type of impact would cast doubt on the idea of event horizons, which are thought to surround black holes and swallow up any material that gets too close.‘We estimated the rate of stars falling onto supermassive black holes,’ said graduate student Wenbin Lu.‘Nearly every galaxy has one. We only considered the most massive ones, which weight about 1.

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There are about a million of them within a few billion light- years of Earth.’Some have suggested instead that a mysterious supermassive object may exist at the center of galaxies in place of a black hole – meaning infalling material would crash into its hard surface, to be destroyed in a dramatic impact. This is illustrated above. According to the researchers, when a star collides with a supermassive object, its gas would envelope the object and shine for months, or years. Using recent archive observations from 1. Pan- STARRS telescope in Hawaii, the researchers scoured data from a survey accounting for half of the northern hemisphere sky over a period of 3. Watch The Hit List HD 1080P.

This allowed them to search for ‘transients,’ or objects that glow for some time before fading out. SUPERMASSIVE BLACK HOLES Supermassive black holes are incredibly dense areas in the centre of galaxies with masses that can be billions of times that of the sun. They act as intense sources of gravity which hoover up dust and gas around them.

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Their intense gravitational pull is thought to be what the stars within galaxies orbit around. How they are formed is still poorly understood. Watch As Good As It Gets Online IMDB more. Astronomers believe they may form when a large cloud of gas up to 1. Many of these black hole seeds then merge to form much larger supermassive black holes. Watch Geography Club Online Forbes. Alternatively, a supermassive black hole seed could come from a giant star, about 1. In the data, they searched for any transients that had the characteristics of a star falling toward a supermassive object and hitting a hard surface.‘Given the rate of stars falling onto black holes and the number density of black holes in the nearby universe, we calculated how many such transients Pan- STARRS should have detected over a period of operation of 3.

Lu said.‘It turns out it should have detected more than 1. Instead of finding more than 1. According to the researchers, when a star collides with a supermassive object, its gas would envelope the object and shine for months, or years.

This heat and dramatic increase in brightness is illustrated above This, they say, suggests the presence of event horizons instead of a hard surface.‘Our work implies that some, and perhaps all, black holes have event horizons and that material really does disappear from the observable universe when pulled into these exotic objects, as we’ve expected for decades,’ said Ramesh Narayan, a theorist from the Harvard- Smithsonian Center for Astrophysics.‘General Relativity has passed another critical test.’The researchers have plans to push the test even further using the much larger 8. Large Synoptic Survey Telescope being built in Chile, which will be far more sensitive than Pan- STARRS.