Black holes final presentation
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Black holes final presentation
- 1. THE EXISTENCE OF BLACK HOLES Tina Avery SCI/151 May 6, 2013 Professor: Sushrut Metha
- 2. EINSTEIN'S THEORY ☼ 1915 – Einstein’s Theory of Gravity predicted the possibility of black holes; however, no one believed they actually existed ☼ 1970 – Hawkins, was convinced black holes were real ☼ Present (Today) – NASA space telescopes have discovered evidence supporting black holes throughout the universe http://joan-druett.blogspot.com/2010/12/kissing-and-albert-einstein.html
- 3. BLACK HOLES ☼ Matter packed into a very small area ☼ Not even light can escape it http://scienceblogs.com/startswithabang/2012/05/10/why-youll-never-escape-from-a/
- 4. MASS, GRAVITY, BLACK HOLES ☼ Mass ☼ Quantity of matter in an object ☼ Gravity ☼ Natural force of attraction exerted by a celestial body ☼ Black Holes ☼ Matter collapses to infinite density ☼ As a result, the curvature of space-time is extreme ☼ Known as the event horizon http://spaceplace.nasa.gov/black-hole-rescue/
- 5. WHAT WOULD HAPPEN TO OUR SOLAR SYSTEM IF THE SUN COLLAPSED INTO A BLACK HOLE? ☼ Things like meteors would still get absorbed from time to time, but much less than they do now ☼ Rate of mass increase due to stuff falling in will be less than it is now ☼ Stuff will not be evaporating as fast as it does now http://dujs.dartmouth.edu/news/public-gains-insight-on-black- holes/attachment/observing-a-black-hole-indirectly#.UYCM7sqKItU
- 6. WHAT IF THE SUN BECAME A BLACK HOLE? ☼ Only stars that weigh considerably more than the Sun end their lives as black holes ☼ Will stay roughly the way it is for another five billion years or so ☼ Very dark and very cold around Earth http://tommyrotten.deviantart.com/art/Black-Hole-Sun-158936374
- 7. BLACK HOLE CANDIDATES ☼X-ray binary star ☼W49B http://centralastronomyclass.pbworks.com/w/page/15400553/Binary%20StarSystem/ http://chandra.harvard.edu/photo/2013/w49b/
- 8. FALLING INTO A BLACK HOLE ☼ Force of gravity is so powerful you would need to travel at a speed faster than the speed of light to escape its pull ☼ No one outside would have view of you, whereas you would have view of him or her ☼ Gravitational pull would bend the light and distort ones last moments of vision ☼ Tidal force would be formed http://ashscrapyard.wordpress.com/2012/01/20/they-pull-me-out-to-throw-me-back- deeper-into-the-hole/
- 9. SURVIVALAROUND A BLACK HOLE ☼ Powerful, even light gets sucked in ☼ Roomy http://www.nasa.gov/centers/goddard/news/topstory/2007/overweight_hole.html
- 10. BLACK HOLES EXISTS BASED ON MY RESEARCH ☼ Yes
- 11. CONCLUSION ☼ Black holes are objects so dense that not even light can escape their gravity; since light nothing can travel faster than light, nothing can escape inside a black hole. ☼ A “tidal force” is created on the body when the pulling force increases as moving toward the center. ☼ If you were to fall into a black hole, no one outside would be able to see you; however you would have a view of them. ☼ Gravitational pull would bend the light and ones last moments of vision would be weird and distorted.
- 12. REFERENCES http://ashscrapyard.wordpress.com/2012/01/20/they-pull-me-out-to-throw-me-back-deeper-into- the-hole/ Battersby, S. (2009). What would it look like to fall into a black hole?. Retrieved May 6, 2013, from http://www.newscientist.com/article/dn16885-what-would-it-look-like-to-fall-into- a-black-hole.html Binary Stars. (n.d.). Retrieved May 6, 2013, from http://www.astro.cornell.edu/academics/courses/astro201/binstar.htm http://centralastronomyclass.pbworks.com/w/page/15400553/Binary%20StarSystem/ Chandra X-ray Center. (2013). W49B: Rare Explosion May Have Created Our Galaxy's Youngest Black Hole. Retrieved May 6, 2013, from http://chandra.harvard.edu/photo/2013/w49b/ http://ashscrapyard.wordpress.com/2012/01/20/they-pull-me-out-to-throw-me-back-deeper-into- the-hole/
- 13. REFERENCES http://dujs.dartmouth.edu/news/public-gains-insight-on-black-holes/attachment/observing-a-lack- hole-indirectly#.UYCM7sqKItU Heckert, P. (2007). Falling into Black Holes: What would happen to Earth's orbit around the Sun, if the Sun were to suddenly collapse into a black hole?. Retrieved May 6, 2013, from http://suite101.com/article/falling-into-black-holes-a15034 Introduction to Black Holes. (n.d.). Retrieved May 6, 2013, from http://www.damtp.cam.ac.uk/research/gr/public/bh_intro.html http://joan-druett.blogspot.com/2010/12/kissing-and-albert-einstein.html Kalmbach Publishing Co.. (2013). No direct link between black holes and dark matter. Retrieved May 6, 2013, from http://www.astronomy.com/News- Observing/News/2011/01/No%20direct%20link%20between%20black%20holes%20and%20dar k%20matter.aspx
- 14. REFERENCES Mass-Energy Equivalence:. (n.d.). Retrieved May 6, 2013, from http://abyss.uoregon.edu/~js/ast123/lectures/lec09.html NASA. (2013). Black Holes. Retrieved May 6, 2013, from http://science.nasa.gov/astrophysics/focus-areas/black-holes/ http://www.nasa.gov/centers/goddard/news/topstory/2007/overweight_hole.html http://scienceblogs.com/startswithabang/2012/05/10/why-youll-never-escape-from-a/ http://spaceplace.nasa.gov/black-hole-rescue/ Texas A & M UNiversity. (2010). Stephen Hawking Dedication, Lecture Inspires. Retrieved May 6, 2013, from http://tamunews.tamu.edu/stephen-hawking-dedication-lecture-inspires/ http://tommyrotten.deviantart.com/art/Black-Hole-Sun-158936374
Notes de l'éditeur
- In 1915, Einstein’s Theory of Gravity predicted the possibility of black holes; however, no one believed they actually existed (Naik, 2013). In 1970, Stephen Hawkins was convinced black holes existed (Texas A & M UNiversity, 2010). Today, NASA space telescopes have discovered evidence supporting black holes throughout the universe (NASA,2013).References:http://joan-druett.blogspot.com/2010/12/kissing-and-albert-einstein.htmlNaik, G. (2013). Theory of Einstein's Proved Right—Again . Retrieved from http://online.wsj.com/article/SB10001424127887324743704578444913060125542.html Texas A & M UNiversity. (2010). Stephen Hawking Dedication, Lecture Inspires. Retrieved from http://tamunews.tamu.edu/stephen-hawking-dedication-lecture-inspires/
- Black holes contains matter packed into a very small area. Within this area, not even light can escape.References:Introduction to Black Holes. (n.d.). Retrieved May 6, 2013, from http://www.damtp.cam.ac.uk/research/gr/public/bh_intro.html http://scienceblogs.com/startswithabang/2012/05/10/why-youll-never-escape-from-a/
- As the mass increases, so does the gravitational pull; if gravitational pull is such that, even light cannot escape, then a black hole forms. Mass is so great, in such a small volume. The velocity needed to escape is greater than the speed light travels. Black holes are formed from the gravitational collapse of a star, usually having a great, massive, core. A star is created when huge, gigantic, gas clouds bind together due to attractive forces and form a hot core, combined from all the energy of two gas clouds. Mass distorts space “curving” it. Objects and light moving near the massive object(s) are forced to take a curved path around the object(s). In 1915, Einstein’s Theory of Gravity predicted the possibility of black holes; however, no one believed they actually existed. The gravitational pull from the core is equal to the gravitational pull of the gases forming a type of orbit; however, when this equality is broken the star can go into several stages. Black holesare sometimes listed among the most serious potential threats to Earth and humanity. A naturally-produced black hole could pass through our solar system. Although it is hypothetical, a large particle accelerator might produce a micro black hole; if this escaped it could gradually eat the Earth. With no heat pushing out against the gravity, the remains of a supernova gets compressed until it is a black hole. The first object to take a picture of a black hole was the Hubble Space Telescope ("Mass-Energy Equivalence:", n.d.). References:Mass-Energy Equivalence:. (n.d.). Retrieved May 6, 2013, fromhttp://abyss.uoregon.edu/~js/ast123/lectures/lec09.html http://spaceplace.nasa.gov/black-hole-rescue/
- If the Sun collapsed into the solar system things like meteors would still get absorbed from time to time, but much less than they do now. The rate of mass increase due to stuff falling in will be less than it is now and stuff will not be evaporating as fast as it is now either. “Even though an object that falls into a black hole can never escape, an object at a distance from a black hole is no more likely to fall into a black hole than into a star of the same mass” (Heckert (2007), para. 4).References:http://dujs.dartmouth.edu/news/public-gains-insight-on-black-holes/attachment/observing-a-black-hole-indirectly#.UYCM7sqKItUHeckert, P. (2007). Falling into Black Holes: What would happen to Earth's orbit around the Sun, if the Sun were to suddenly collapse into a black hole?. Retrieved from http://suite101.com/article/falling-into-black-holes-a15034
- Only stars that weigh considerably more than the Sun end their lives as black holes. The Sun will roughly stay the way it is for another five billion years or so. If the Sun did become a black hole it would be very dark and very cold around Earth. The Earth and other planets would not be sucked up into the black hole; however, they would continue orbiting the same paths as they do now. Reference:http://tommyrotten.deviantart.com/art/Black-Hole-Sun-158936374
- A Binary star is a misnomer because it is actually a star made up of usually two stars, which orbit around one center of mass where the mass is most concentrated. This star is not to be confused with two stars, which appear close together to the naked eye; in reality the binary star is far apart (“Binary Stars”, n.d.).According to Chandra X-ray Center (2013), “The remnant, called W49B, is about a thousand years old, as seen from Earth, and is at a distance of about 26,000 light years away.The supernova explosions that destroy massive stars are generally symmetrical, with the stellar material blasting away more or less evenly in all directions. However, in the W49B supernova, material near the poles of the doomed rotating star was ejected at a much higher speed than material emanating from its equator” (para. 2).Reference:Binary Stars. (n.d.). Retrieved from http://www.astro.cornell.edu/academics/courses/astro201/binstar.htm http://centralastronomyclass.pbworks.com/w/page/15400553/Binary%20StarSystem/Chandra X-ray Center. (2013). W49B: Rare Explosion May Have Created Our Galaxy's Youngest Black Hole. Retrieved May 6, 2013, from http://chandra.harvard.edu/photo/2013/w49b/
- Force of gravity is so powerful you would need to travel at a speed faster than the speed of light to escape its pull. No one outside would have view of you, whereas you would have view of him or her. The gravitational pull would bend the light and distort ones last moments of vision. A tidal force would then be formed (Battersby, 2009). There is however, no distinct findings between black holes and dark matter. Black holes are gravity lenses, which bend light. Astronomers do not see enough lensing events to account for the amount of dark matter that must exists (Kalmbach Publishing Co., 2013). “Such gravity monsters, or even larger ones, have been found in all luminous galaxies with central bulges where a direct search is feasible; most, and possibly all bulgy galaxies, are believed to contain a central black hole” (Kalmbach Publishing Co., (2013), para. 5). References:http://ashscrapyard.wordpress.com/2012/01/20/they-pull-me-out-to-throw-me-back-deeper-into-the-hole/Battersby, S. (2009). What would it look like to fall into a black hole?. Retrieved May 6, 2013, from http://www.newscientist.com/article/dn16885-what-would-it-look-like-to-fall-into-a-black-hole.html Kalmbach Publishing Co.. (2013). No direct link between black holes and dark matter. Retrieved from http://www.astronomy.com/News-Observing/News/2011/01/No%20direct%20link%20between%20black%20holes%20and%20dark%20matter.aspx
- I believe there is other civilizations out there; however, I do not believe other civilizations would survive around a black hole. I believe this to be true because of the gravitational tides within the central singularity are so powerful that even light gets sucked in. This is where the domestic domain is rather roomy, creating space for life in the spinning black hearts of galactic nuclei.Reference:http://www.nasa.gov/centers/goddard/news/topstory/2007/overweight_hole.html
- Based on my research, I do believe black holes exist. With technology today, astronomers have been able to detect several black holes in X-ray emitting binary stars systems. Even more convincing evidence has come from the centers of several large galaxies.