- Sep 1, 2010
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When many of us think about black holes, we think of a huge cosmic event, sucking in everything around it. However, there is also the possibility of small black holes. “Einstein’s theory of relativity allows for black holes,” Kesden explains, “but doesn’t stipulate a size. It’s very possible that the early universe produced very small black holes. These would gravitate like massive black holes, floating through the universe and clustering.”
Yup some scientists believed that micro black holes predicted by Stephen Hawking can be candidate for dark matter, but later other scientists kinda disproved that and showed that dark matter is some kind of unknown particle. But atm neither new particles nor tiny black holes are found.
No. Black Holes require a specific level of gravity to maintain a compressed state. Without that minimum gravity level an event-horizon can not be maintained and matter expands back out to it's normal physical dimensions.
Unfortunately Hawking never finished that theory and he couldn't finish it because the theory of General and Special Relativity(which is a base for all of Hawkings theories) have flaws. Therefore his predictions, while brilliant conceptually, have no merit.Yup some scientists believed that micro black holes predicted by Stephen Hawking can be candidate for dark matter
If "dark matter" existed, it would.and its not sure if gravity effects Dark matter
Earth just got 7 km/s faster and about 2000 light-years closer to the supermassive black hole in the center of the Milky Way Galaxy. But don’t worry, this doesn’t mean that our planet is plunging towards the black hole. Instead the changes are results of a better model of the Milky Way Galaxy based on new observation data, including a catalog of objects observed over the course of more than 15 years by the Japanese radio astronomy project VERA.
Based on the VERA Astrometry Catalog and recent observations by other groups, astronomers constructed a position and velocity map. From this map they calculated the center of the Galaxy, the point that everything revolves around. The map suggests that the center of the Galaxy, and the supermassive black hole which resides there, is located 25800 ly from Earth. This is closer than the official value of 27700 light-years adopted by the International Astronomical Union in 1985. The velocity component of the map indicates that Earth is travelling at 227 km/s as it orbits around the Galactic Center. This is faster than the official value of 220 km/s.
The first black hole ever discovered is more massive than previously thought. Cygnus X-1 is the heaviest stellar black hole observed without using gravitational waves.
The new observations suggest that Cygnus X-1 is ~ 7200 ly (9.5 trillion km) from Earth, rather than the previous estimate of ~ 6000 ly. This implies that the star in Cygnus X-1 is even brighter, and therefore bigger, than astronomers thought. The star weighs ~ 40.6 suns, the researchers estimate. The black hole must also be more massive in order to explain its gravitational tug on such a massive star. The black hole weighs ~ 21.2 suns — much heftier than its previously estimated 14.8 solar masses.
The first black hole ever discovered is more massive than we thought | MIT Technology Review
Like actual evidence? Nope, because largest black holes will take 10^106 years to evaporate, and Universe is about 10^10 years old so you'll need to wait that long and see.is there evidence this is what happens to black holes? from everything I have read they just get bigger and bigger.
Like actual evidence? Nope, because largest black holes will take 10^106 years to evaporate, and Universe is about 10^10 years old so you'll need to wait that long and see.
But theory (Hawking radiation) is as true as it can get.
Yes there's direct and irrefutable evidence such as Vacuum Energy, Virtual Particles, Unruh Effect and so on. And there's indirect evidence that mass eventually fades out.Is there proof that anything can evaporate into nothing?
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In short, no. Hawking Radiation is only a theory, he could never prove it, mathematically. In fact he never resolved the problems in several parts of his black-hole theory in general. Some if the physics predicted by General and Special Relativity have actually been disproven as observation of behaviors displayed by the universe itself contradict those predictions. Black-Holes only consume, they do not radiate. The idea of the "great rip" or the universe stretching itself out far enough to evaporate all matter is only a theory and not a very good one.is there evidence this is what happens to black holes? from everything I have read they just get bigger and bigger.
That is not evidence, as such. It is theory based on other theories. None of those postulations explain where the universe came from, why the Big Bang happened, nor how it happened. It's all based on General & Special Relativity, the math of which breaks down and is unsolvable when any mass object collapses into a black hole. Our universe sprang forth from an ultra massive black hole. G&SR can't not mathematically resolve those problems. So therefore, it is either partly or completely incorrect. It just so happens to predict some things correctly, however that is likely to just be coincidence.Yes there's direct and irrefutable evidence such as Vacuum Energy, Virtual Particles, Unruh Effect and so on. And there's indirect evidence that mass eventually fades out.
|Processor||Ryzen R9 5950X|
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