The very first image of a supermassive black hole taken by the Event Horizon Telescope on 10 April 2019. According to an estimation, Sagittarius A* has a mass of more than 4.3 million suns. Our milky way galaxy has also a supermassive black hole Sagittarius A*. Most galaxies have black holes at their centerĪccording to scientists, most of the galaxy has a supermassive black hole at the center of the galaxy. After forming, it starts absorbing surrounding objects, stars and merging with other black holes, and later it may become supermassive black holes with more than millions of solar masses. Stellar black holes are formed when a massive star of more than 40 solar masses collapses at the end of its life cycle. The massive star form a stellar black hole Nearby stars to black holes behave differently compared to normal stars and this effect can help to find them. They can be found only with the help of some special telescopes. As lights can not get out no one can see it. One of the common black hole facts is, they are invisible. Whereas for rotating black holes this region forms a ring singularity also know as ringularity. For a non-rotating black hole, this region is lies at a single point. Scientists have estimated that this singular region has infinite density. Singularity lies at the center of every black holeĪccording to the theory of general relativity, a singularity is a region where space-time curvature is infinite. These rotating black holes contain angular momentum.ħ. Rotating black holes are formed when a massive spinning star collapse or a collision of rotating objects, stars, and interstellar gases. There are two types of black according to their rotation, 1. Once anything crosses this point, it can not return back as enormous gravity will pull it inside. The event horizon lies all-around a black hole is also known as “point of no return”. Every black hole has an event horizon that’s why nothing could be observed so far inside a black hole. Similarly, a black hole can absorb every light even all objects and does not reflect any light or does not allow to go out of any object.Īn event horizon is a region of a boundary inside which no event can be observed by an observer. An ideal black body can absorb every light but does not reflect any. (Read about:- revolution of planets around the sun)Ī black hole does not reflect any light similarly to an ideal black body. So Theoretically, nothing will happen and our solar system will work as usual, though the energy system previously provided by the sun wouldn’t be available. And orbits of planets and other objects depend on the gravitational pull so they would orbit as usual as it was. That means it may be small in size but the gravitational pull will be the same as our Sun. As the replaced black hole would have the same mass. More gravity results in more gravitational pull automatically.įor example: Here is a question, what happens if we replace our sun with a black hole of the same mass? The answer is ‘nothing’. It means the object that has more mass will have more gravity. Though it pulls objects but just because of its gravity.
There is a misconception that it can pull or suck in interstellar objects like a vacuum cleaner. The black hole itself does not pull anything (Read about:– General theory of relativity)ģ. We can observe it, like no object return from the black hole because time has been stopped for that object. Once an object enters into a black hole the time will stop for that particular object. The more you get closer to the black hole, the more time will slow down. (Read about:- Gravity and Gravitational Force)Īccording to Einstein’s general theory of relativity, time is affected by speed and mass. So, for un-affecting the gravitational pull of the black hole the object must travel with more than light-speed. Anything with an escape velocity greater than the speed of light is called a black hole. Though black holes do not suck any object until the object comes under the influence of its gravity. The density of the black holes are extremely high, that’s why they have enormous gravity.
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