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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 ..... from the ergosphere with more energy than they entered. This energy is taken from the rotational energy ...

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 can a black hole's own gravity, but not light, escape from it ...

blackholes.stardate.org/resources/faqs/black-hole-gravity.html

In the case of a black hole, it's best to think of gravity as Albert Einstein described it: a warp in space-time. Einstein's theory of special relativity says that mass ...

HubbleSite - Reference Desk - FAQs - 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 ... Some stars are even bigger than that, causing the birth of black holes.

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.

How are black holes formed? - Quora

www.quora.com/How-are-black-holes-formed-1

Stellar Black Holes. A star is massive. The gravitational acceleration at the surface is... um, ... for small mass black holes, rather than sucking all the mass in, the mass becomes gravitationally binded, causing the mass to orbit the black hole.

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

www.scientificamerican.com/article/what-causes-objects-such/

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.

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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 ...

HubbleSite: Black Holes: Gravity's Relentless Pull interactive ...

hubblesite.org

A black hole is born when an object becomes unable to withstand the compressing force of its own gravity. Many objects (including our Earth and Sun) will never ...