Black Holes Albert Einstein first predicted black holes in 1916 with his general theory of relativity. The term "black hole" was coined in 1967 by American astronomer John Wheeler, and the first one was discovered in 1971. A black hole is a place in space where gravity pulls so much that even light can not get out. The gravity is so strong because matter has been squeezed into a tiny space. This can happen when a star is dying. Because no light can get out, people can't see black holes. They are invisible. Space telescopes with special tools can help find black holes. The special tools can see how stars that are very close to black holes act differently than other stars. Scientists think the smallest black holes formed when the universe …show more content…
It's about four million times the mass of the Sun. It's surrounded by a cluster of young stars, some of which plunge to within a few billion miles of the black hole. And although it's quiet today, a century ago it gorged on a clump of matter that passed too close, creating a pyrotechnic display that lit up the Milky Way's heart. Much of that evidence has been amassed by two teams, one led by Ghez and another by Reinhard Genzel, director of the Max Planck Institute for Extraterrestrial Physics in Germany. Using giant telescopes in Hawaii and Chile and cutting-edge observational techniques, they have probed closer to the black hole than ever before. That has allowed them to plot the orbits of giant stars that pass hair-raisingly close to the black hole, providing the best measurement of the black hole's mass. And it has revealed that some of the stars around the black hole are far younger than expected. "There's been a myriad of surprises, which is the fun of doing research," says Ghez. "You go in expecting to answer one thing and you come out the other end with more questions than you started with." The central question that Ghez, Genzel, and others hoped to answer was whether a supermassive black hole inhabits the center of the Milky Way. As early as 1980, radio observations revealed that gas was swirling around a dark, massive object at the center of the galaxy. That object, which glowed steadily at radio
As this matter spirals into the black hole it creates what is known as an accretion disk, which accelerates and heats up emitting X-rays which can then be detected by astronomers.[6]
Due to the strong gravity pulls, all of the light around a black hole is sucked into the middle. Scientists can see how the strong gravity affects the stars and gas around the black hole however, study to see if the stars are orbiting the black hole. (Space) This is how they know they exist, by studying the stars around them. Also, when a black hole and a star are close together, a high energy light is formed, which humans are incapable of seeing. However, satellites and telescopes can see these high energy lights, allowing us to spot black holes
Black holes are some of unusual and most interesting objects found in outer space. The first thing I learned, black holes are objects of the greatest density due to the strong gravity because mater has been squeezed into a tiny space. With the black holes relationships with mass and gravity, they have an extremely powerful gravitational force that even light cannot escape from their grasp if it comes near enough. Second thing I learned is about the inner region of a black hole, where its mass lies, is known as its singularity, the single pint in space-time where the mass of the black hole is concentrated. The third thing I learned that I found the most fascinating is if the earth ever falls into a black hole, one of the effect that will happen is “spaghettification,” which means if objects come too close to a black hole, it will stretch out, just like a spaghetti. This effect is brought about by a gravitational gradient across the object or a body. For example, if earth comes too close to a black hole, the nearest part of the planet will be pulled by an enormous gravitational pull, while leaving the farthest part with a small gravitational force. The fourth thing I learned is that the new hypothesis suggests that anything that touches a black hole will become an
Charlie sat on the chaise in their suite, feet propped up on a pillow, watching as Bass paced the floor. “Bass, we’ve only been over this a dozen times,” she said, her voice oozing with comforting patience as she ran down his list of bullet points, conveniently written out for her.
Scientists do not have the ability to directly observe black holes with telescopes that detect x-rays, light, or other forms of electromagnetic radiation. However, Scientists can infer the presence of black holes and study them by detecting their effect on other matter nearby. If a black holes passes through a cloud of interstellar matter, it will draw that matter inward in a process known as accretion. A similar process will occur if a black holes passes a normal star. So, after a black hole is created, it draws in anything in its path adding to the extreme amount of matter that is packed into that very small area.
One night there was a little boy named Zach, and his parents Mary, his mother, and John, his stepfather. They lived in the small town of Roscoe, MO. This small town is ten miles from the nearest emergency room. One night the poor boy got sick.
A black hole is a region in space where the pulling force of gravity that is so strong that the region cannot escape. This compression can take place at the end of its stars life. Some black holes are a result of dying stars. How every space telescopes with special instruments can help find black holes. They can observe the behavior of material and stars that are very close to black holes. Black holes can come in a rage of signs, but there are three main types of black holes. The black holes mass and size determins what kind it is. The smallest ones are known as primordial black holes. Scientists believe this type of black hole can be up to 20 times greater than the mass of the sun and fit into a ball of about 10 miles. The largest black holes are called supermassive. Supermassive black holes are at the center of the milky way galaxy is called sagittarius. A black holes gravity can be as strong to pull off the outer layer gass of the star and grow a disk. The
The film was released in 1979 when the public had a love affair with black holes. Whether the science would get better in the future still remained to be seen.
I walked around cautiously hoping not to get caught. Dang. Walked around three hours before I got that baby. God. I was like a tiger watchin its prey. Ahh I can't get over wutta beauty she was, the switchblade I'd always wanted. All black n silver shiney. I wanted it. So I took it, gally, I didn't care if I was stealing, I wanted her badly, and I got it. Anything I ever want, I get. The workers were staring at me the whole time so I had to be careful. As soon as she was in my hands and I walked out the door I felt like I'd just won a grand prize of some sort.
Today there are many myths about these solar objects and these include the following: Black holes are empty. No, as a matter of fact they’re one of the densest objects in the universe (Gary, S. 2015). Black holes will suck in the universe. This is incorrect, black holes only take in objects that are close and/or near them. The Earth which is 92,956 million miles away. Not all stars can become a black hole. False, black holes are formed with stars die and leave behind a large dense core. Therefore most of all stars are more than likely to become a black hole (Anderson, J. 2010)
Ted Bunn's webpage over black holes does a good job at informing the reader on black holes without over complicating the explanations. He even goes into extra detail about black holes, like how the experience would be if someone were to enter the gravitational pull of one. Additionally, he does a good job at entertaining the reader with his fascinating details and hypothetical situations. As Bunn entertains us he still remains a down to earth informer and reminds us that the information though true will be
When it was time for dinner I began to yell for Walter he did not come the first time, so I yelled once again and slowly he came limping into the kitchen. I didn’t know what to say or do. HIs father asked him what is wrong, he said ‘’nothing’’ so he asked again while curiously waiting for a response all we got was is legs hurt but of course we knew that wasn’t the complete truth. He wasn’t telling us something. His father was getting angry and told Walter to take his pants down. Walter had bruises, blood and bad swelling up both of his legs then he had to tell us after waiting in silence he spoke. I couldn’t believe what words I heard come out of his mouth. “ Mama beat me with a stick’’. I couldn’t believe his legs looked that way, he blamed
Active Galactic Nuclei (AGNs) are very luminous and dense regions in the center of galaxies believed to host Super Massive Black Holes (SMBHs). The electromagnetic radiation sent out from AGNs is conjectured to come from matter that the SMBHs accrete which then takes the form of an accretion disk circling the black hole. These accretion disks are best approximated with an irregular density and temperature distribution made up by very hot gas and plasma~\citep{skadowski2015global}.
Thank you for providing me with a very interesting and amusing experience over the last few days. I have really enjoyed our time together, particularly the end of the night.
The formation of supermassive black holes has been questioned in physics since the day of their discovery. Just how is something so large and powerful formed? Are they a danger to us? What lies beyond the event horizon? These are all questions that have been asked and not yet answered by astrophysicists. The first step to completely understanding these obscure creatures is finding out how they form, today's physicists are working endlessly to find an answer. Previous theories stating that supermassive black holes developed over time by ingesting large quantities of gas, have recently been found to be wrong. The most recent developing theory describes supermassive black holes forming by observing other black holes. There are two versions of