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Black hole

en.wikipedia.org/wiki/Black_hole

A black hole is a region of spacetime exhibiting such strong gravitational effects that ...... This seemingly causes a violation of the second law of black hole mechanics, since the radiation will c...

What Is a Black Hole? | NASA

www.nasa.gov/audience/forstudents/5-8/features/nasa-knows/what-is-a-black-hole-58.html

Stellar black holes form when the center of a very massive star collapses in upon itself. This collapse also causes a supernova, or an exploding star, that blasts ...

How is a black hole created? - Hubble Space Telescope

hubblesite.org/reference_desk/faq/answer.php.id=56&cat=exotic

A common type of black hole is produced by certain dying stars. A star with a mass greater than about 20 times the mass of our Sun may produce a black hole at ...

Creation of Black Holes - Black Holes and Wormholes - The Physics ...

www.physicsoftheuniverse.com/topics_blackholes_blackholes.html

The ripples in space-time caused by two black holes orbiting around each other - typically in a three-leaved clover shape or more complex multi-pass ...

www.ask.com/youtube?q=What Causes Black Holes?&v=8grTbzAo0PA
Nov 20, 2012 ... Black holes are created when a large star collapses under the force of gravity having run out of nuclear fuel, collapsed core of a giant star forms ...

BBC Universe - Black holes: How is a waterfall like a black hole?

www.bbc.co.uk/science/space/universe/sights/black_holes

Supermassive black holes may have formed when huge clouds of interstellar gas collapsed, but this is not certain. ... What causes black holes? Gamma rays ...

Black Holes: Facts - Space.com

www.space.com/15421-black-holes-facts-formation-discovery-sdcmp.html

Apr 9, 2015 ... Black holes are some of the strangest and most mysterious objects in the ... effects would cause the event horizon to act much like a wall of fire, ...

How Do Black Holes Form? - Universe Today

www.universetoday.com/33454/how-do-black-holes-form/

Black holes are the most exotic and awe inspiring objects in the Universe. Take the mass of an entire star. Compress it down into an object so compact that.

Do supermassive black holes cause galaxy rotation? (Advanced ...

curious.astro.cornell.edu/about-us/86-the-universe/black-holes-and-quasars/general-questions/424-do-supermassive-black-holes-cause-galaxy-rotation-advanced

Jun 27, 2015 ... If a black hole is in the center of our galaxy, could it be the source of the rotation of the galaxy and if so, if it is acreeting matter could this mean ...

Frequently Asked Questions About Black Holes

www.phys.vt.edu/~jhs/faq/blackholes.html

What is the best evidence for the existence of black holes? ... the star acting on a chunk of matter at the star's surface will want to cause that matter to fall inward, ...

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How does a black hole form? - Articles - StarDate's Black Hole ...

blackholes.stardate.org

A black hole forms when any object reaches a certain critical density, and its gravity causes it to collapse to an almost infinitely small pinpoint. Stellar-mass black ...

What causes a black hole to form?

www.houghtonmifflinbooks.com

Answer: D (a large star's core collapses to become so dense that its gravitational pull keeps light from escaping) black hole An extremely dense celestial object ...

What causes objects such as stars and black holes to spin ...

www.scientificamerican.com

Every object in the universe--from a basic star to an exotic black hole--spins, and the origin of that spin can be traced back to the very beginning of time.