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A black hole is a region of spacetime exhibiting such strong gravitational effects that nothing—including particles and electromagnetic radiation such as light—can escape from inside it. The theory of general relativity predicts that a sufficiently compact mass can deform spacetime to form a black hole.
Black hole - Wikipedia, the free encyclopedia
https://en.wikipedia.org/wiki/Black_hole
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Black hole - Wikipedia, the free encyclopedia
https://en.wikipedia.org/wiki/Black_hole
A black hole is a region of spacetime exhibiting such strong gravitational effects that nothing—including particles and electromagnetic radiation such as light—can escape from inside it. The theory of general relativity predicts that a sufficiently compact mass can deform spacetime to form a black hole.
What Is a Black Hole? | NASA
www.nasa.gov/audience/forstudents/k-4/.../what-is-a-black-hole-k4.html
by J Wall - 2015
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.Black Holes - NASA Science
science.nasa.gov › Astrophysics › Focus Areas
Apr 19, 2016 - Don't let the name fool you: a black hole is anything but empty space. Rather, it is a great amount of matter packed into a very small area - think ...What Is a Black Hole? | NASA
www.nasa.gov/audience/forstudents/5-8/.../what-is-a-black-hole-58.html
by J Wall - 2015
A black hole is a region in space where the pulling force of gravity is so strong that light is not able to escape. The strong gravity occurs because matter has been ...Black Holes: Facts - Space.com
www.space.com › Science & Astronomy
Apr 9, 2015 - Black holes are some of the strangest and most fascinating objects found in outer space.HubbleSite: Black Holes: Gravity's Relentless Pull
hubblesite.org/explore_astronomy/black_holes/home.html
Yet we know that black holes exist. We know how they are born, where they occur, and why they exist in different sizes. We even know what would happen if you ...ESA - Space for Kids - Our Universe - Black Holes
https://www.esa.int/esaKIDSen/SEM0V1BE8JG_OurUniverse_0.html
Jun 19, 2016 - Black holes are the strangest objects in the Universe. A black hole does not have a surface, like a planet or star. Instead, it is a region of space ...Supermassive Black Hole | COSMOS
astronomy.swin.edu.au/cosmos/S/Supermassive+Black+Hole
As the name suggests, supermassive black holes contain between a million and a billion times more mass than a typical stellar black hole. Although there are ...Stephen Hawking: 'There are no black holes' : Nature News & Comment
www.nature.com/news/stephen-hawking-there-are-no-black-holes-1.14583
The defining characteristic of a black hole may have to give, if the two pillars of modern physics — general relativity and quantum theory — are ...Black Hole: Star Eater - National Geographic Magazine
ngm.nationalgeographic.com/2014/03/black-holes/finkel-text
Albert Einstein thought that a black hole--a collapsed star so dense that even light could not escape its thrall--was too preposterous a notion to be real. Einstein ...Black Hole Firewalls Confound Theoretical Physicists - Scientific ...
www.scientificamerican.com/.../black-hole-firewalls-confound-theoretical-p...
If a new hypothesis about black hole firewalls proves correct, at least one of three cherished notions in theoretical physics must be wrong.