Noah Yeasted
A black hole is a large amount of matter in a small space. Black holes are one of the things that can be left over after a larger star dies. The other thing a larger star can become after it dies is a neutron star. A white dwarf is created after a smaller star dies. The only way for a star to become a black hole is if the star was 10-15 times more massive than the sun. The diameter of a black hole is approximately the diameter of New York City. A black hole’s gravitational pull is so strong that not even light can escape.
The idea of black holes existed for centuries, but the name black hole was given to them in 1967 by a physicist named John Wheeler. Scientists can’t study black holes via telescopes that can detect x-rays, light …show more content…
Entropy and black holes don’t seem to go together: Black holes were supposed to radiate no energy at all and you can't have entropy without radiation.
But then Hawking used math and science to show that, if you use quantum mechanics, you could show that black holes were not really black, they actually emit radiation.
This radiation comes from "virtual particles," which are constantly popping into and out of existence. They do so in matter-antimatter pairs, which one of the particles has positive energy and the other has negative energy.
Ordinarily, these pairs immediately destroy each other, but if the event of the particles switching between existence and non-existence occurred at the boundary of a black hole's event horizon, one particle could, theoretically, get eaten while the other went into space. If the negative-energy particle were eaten, the black hole's mass would shrink by a tiny amount, and the object would emit a small amount of radiation.
Hawking worked out this idea in 1974, which is why this hypothesized black-hole light is known as Hawking radiation, or Hawking-Bekenstein radiation. Nobody has spotted such emissions yet, but most physicists believe the emissions exist. Therefore, they posit, all black holes will shrink away to nothingness eventually, after there's no matter left for them to eat …show more content…
Here on earth, we have a front row seat to this extremely rare galactic event that will have ripple effects throughout our galaxy.
Dr. Packham and astronomers lead from the University of Florida observed the magnetic field of a black hole within our own galaxy from multiple wavelengths for the first time. The results, which were a collective effort among several researchers, are enlightening about some of the most mysterious objects in
A black hole is a large amount of matter in a small space. Black holes are one of the things that can be left over after a larger star dies. The other thing a larger star can become after it dies is a neutron star. A white dwarf is created after a smaller star dies. The only way for a star to become a black hole is if the star was 10-15 times more massive than the sun. The diameter of a black hole is approximately the diameter of New York City. A black hole’s gravitational pull is so strong that not even light can escape.
The idea of black holes existed for centuries, but the name black hole was given to them in 1967 by a physicist named John Wheeler. Scientists can’t study black holes via telescopes that can detect x-rays, light …show more content…
Entropy and black holes don’t seem to go together: Black holes were supposed to radiate no energy at all and you can't have entropy without radiation.
But then Hawking used math and science to show that, if you use quantum mechanics, you could show that black holes were not really black, they actually emit radiation.
This radiation comes from "virtual particles," which are constantly popping into and out of existence. They do so in matter-antimatter pairs, which one of the particles has positive energy and the other has negative energy.
Ordinarily, these pairs immediately destroy each other, but if the event of the particles switching between existence and non-existence occurred at the boundary of a black hole's event horizon, one particle could, theoretically, get eaten while the other went into space. If the negative-energy particle were eaten, the black hole's mass would shrink by a tiny amount, and the object would emit a small amount of radiation.
Hawking worked out this idea in 1974, which is why this hypothesized black-hole light is known as Hawking radiation, or Hawking-Bekenstein radiation. Nobody has spotted such emissions yet, but most physicists believe the emissions exist. Therefore, they posit, all black holes will shrink away to nothingness eventually, after there's no matter left for them to eat …show more content…
Here on earth, we have a front row seat to this extremely rare galactic event that will have ripple effects throughout our galaxy.
Dr. Packham and astronomers lead from the University of Florida observed the magnetic field of a black hole within our own galaxy from multiple wavelengths for the first time. The results, which were a collective effort among several researchers, are enlightening about some of the most mysterious objects in