Mike Micallef Black Holes

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Black holes are formed when massive stars collapse in on themselves after exhausting their nuclear fuel. The collapsed star's immense gravity causes even light to be unable to escape, creating an event horizon around the black hole. There is strong evidence that supermassive black holes exist at the centers of galaxies, helping to shape their structure and hold stars in orbit. Black holes can continue growing by absorbing nearby matter and other objects that come too close and cross the event horizon.

Technology Education

Black Holes An Interactive PowerPoint By: Mike Micallef

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Hey I'm DIVYA SHREE NANDINI. I'm here with my new presentation on Black Hole. I'm sure you'll find it interesting. well first thing what is black hole- "Black hole, cosmic body of extremely intense gravity from which nothing, not even light, can escape. A black hole can be formed by the death of a massive star. When such a star has exhausted the internal thermonuclear fuels in its core at the end of its life, the core becomes unstable and gravitationally collapses inward upon itself, and the star’s outer layers are blown away. The crushing weight of constituent matter falling in from all sides compresses the dying star to a point of zero volume and infinite density called the singularity." wanna know more about it then come with me. :)

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search on NASA site also go through the latest news related to black holes before presenting your seminar. many queries are asked related to black holes. present the astronomical data's for Good delivery of seminar.In the 18th century John Michell and Pierre-Simon Laplace first mentioned about the objects with a huge gravitation, from which even light cannot escape. In 1915 Albert Einstein developed the theory of general relativity. Karl Schwarzschild finds black holes as a solution to Einstein’s equations (1916) Robert Oppenheimer and Hartland Snyder predict that massive stars can collapse into black holes (1939) A black hole is a region of space that has so much mass concentrated in it that there is no way for a nearby object to escape its gravitational pull.” Black holes are exotic structures whose gravitational fields are so powerful that they trap everything, even light. They were first postulated by Albert Einstein's theory of general relativity.” This can happen when a star is dying. Though they are black they are invisible to us. The density of a black hole is so great it would be like taking the whole Earth and crushing into a volume smaller than a 1” marble!. Stellar-mass: 3 to 20 times the mass of our Sun Supermassive: Black holes with millions to billions of times the mass of our Sun Mid-mass: In between stellar-mass and supermassive.

A presentation I gave to the Brighton Astronomy Society in Jan 2016 - http://brightonastro.com/ , https://www.facebook.com/brightonastro/ Annoyingly that's removed the videos from the slides, so here are links to those: https://www.youtube.com/watch?v=e-P5IFTqB98&t=18s (This Youtube channel "In a nutshell" is absolutely fantastic by the way and I highly recommend a look through their other videos!) https://www.youtube.com/watch?v=duoHtJpo4GY https://vimeo.com/8723702 I've also made my notes from preparing the slides available here as well: https://docs.google.com/document/d/1gqgsAbvoCB_7-_gPToqOuSixc02YnU-ajf-uT60R1vc/edit?usp=sharing -- there are LOTS of further links to interesting videos in there as well, that I didn't use on the night so worth a scan through. Any further questions, feel free to ask in comments on here

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Describe, in detail, what would happen if you fell into a black hole, from both your perspective, and the perspective of someone who is watching you fall in. You should include specific effects, including effects on space, time, and what you would see. Solution It\'s safe to say you wouldn\'t survive the trip, so stay on this side of the Event Horizon if you ever want to be seen again. Black Holes are massive objects occupying a tiny volume in space. When a super-massive star (many times larger than the Sun) stops sustaining enough nuclear fusion at its core to support its size, its mass may collapse into itself and form a Black Hole, sucking in everything around it. Our Milky Way galaxy spirals around a super-massive Black Hole at its center. Since nothing can escape from the incredible gravitational pull of a Black Hole (even light itself), scientists can only speculate on what would happen to a person falling into a Black Hole. However, it does seem evident that the crushing gravity would not be kind to your body. Soon after passing the Event Horizon, the point of no return, your body\'s atomic structure would be ripped apart. The parts of your body closer to the singularity experience a stronger gravitational pull than the parts of your body further away from the singularity. This \"tidal gravity\" creates a differential gravitational pull on your body that literally stretches you out as you fall in. Alas, the rack of space-time is unforgiving to even the most pliant mind, and ultimately it\'s impossible to keep yourself together. .

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Title: Journey Through the Cosmos: Exploring Black Holes & Dr. Stephen Hawking's Legacy Embark on a captivating journey through the depths of space and the brilliant mind of one of history's most renowned scientists, Dr. Stephen Hawking. In this enlightening presentation, we delve into the enigmatic phenomenon of Black Holes, their mysterious nature, and the groundbreaking discoveries that have shaped our understanding of the universe. Unlock the secrets of these celestial wonders as we explore topics such as the fundamental question: What is a Black Hole? Delve into the gripping tale of their discovery and unravel the intricate process of their formation. From the mind-bending structure of Black Holes to the various types that exist across the cosmos, each slide unveils a new layer of cosmic intrigue. But what happens if someone were to venture too close, falling into the gravitational abyss of a Black Hole? Discover the scientific speculation and theories that surround this captivating scenario, offering insight into the ultimate fate of such an intrepid explorer. Moreover, journey through the extraordinary life and groundbreaking research of Dr. Stephen Hawking, a visionary whose contributions to theoretical physics revolutionized our understanding of the cosmos. Explore the trials and triumphs of his remarkable journey, from his early years to his groundbreaking work on Black Holes and beyond.

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