I found an answer from www.history.com

Even Albert Einstein Had His Doubts About Black Holes - HISTORY

Apr 15, 2019 ... Black Holes Were Such an Extreme Concept, Even Einstein Had His Doubts ... More than a century ago, Albert Einstein stunned the world when he ... The theory not only described the relationship between space, time, gravity and ... of infinite density—onto the sheet, what would happen to space-time?

For more information, see Even Albert Einstein Had His Doubts About Black Holes - HISTORY

I found an answer from physics.stackexchange.com

Why does a black hole have a finite mass? - Physics Stack Exchange

Black holes don't have infinite density at their singularity/center. ... if it has infinite density, that would mean it has infinite gravity (or infinite ...

For more information, see Why does a black hole have a finite mass? - Physics Stack Exchange

I found an answer from www.khanacademy.com

Black holes (video) | Khan Academy

If it has no mass, how is it affected by gravity? I thought that gravity only ..... I once read that a black hole has zero volume and infinite density. Which, in simple ...

For more information, see Black holes (video) | Khan Academy

I found an answer from www.bbc.com

Stephen Hawking's Reith Lecture: Annotated transcript - BBC News

Jan 26, 2016 ... DS: The phrase 'black hole' is simple enough but it's hard to ... Once anything slips over the edge or 'event horizon', there is no ... symmetric star would contract to a single point of infinite density. ... This is how the effect of gravity is explained. ... If you are above the falls, you can get away if you paddle fast ...

For more information, see Stephen Hawking's Reith Lecture: Annotated transcript - BBC News

I found an answer from www.britannica.com

How Do Black Holes Really Work? | Britannica.com

Science fiction has often relied on the concept of black holes as a plot device, painting ... In short, black holes are massive pits of gravity that bend space-time because ... a singularity—something consisting of zero volume and infinite density. ... Black holes are hard to find, but if you not only did find one but also went inside it ...

For more information, see How Do Black Holes Really Work? | Britannica.com

I found an answer from www.quora.com

If a black hole has an infinite density, why does it not have an infinite ...

If a black hole has an infinite density, why does it not have an infinite gravity? ... When mass is pushed in, that mass will create a gravity well around which light ...

For more information, see If a black hole has an infinite density, why does it not have an infinite ...

I found an answer from www.smithsonianmag.com

Would Astronauts Survive an Interstellar Trip Through a Wormhole ...

Nov 7, 2014 ... The movie's wormhole is based on real physics from retired CalTech ... mathematical model of the entire universe, including gravity and the particles ... of a black hole is a singularity, a neutral, unmoving sphere with infinite density. ... Even if exotic matter was available, traveling through it may not be pretty.

For more information, see Would Astronauts Survive an Interstellar Trip Through a Wormhole ...

I found an answer from www.nationalgeographic.com

Einstein's Evolving Universe: Beyond the Big Bang

Einstein concluded that the cosmos has no universal clock or common reference .... be found at a black hole's center: a point of zero volume and infinite density, ... “If two black holes collided, gravity waves would be the only signals to come out ...

For more information, see Einstein's Evolving Universe: Beyond the Big Bang

I found an answer from en.wikipedia.org

Gravitational singularity - Wikipedia

A gravitational singularity, spacetime singularity or simply singularity is a location in spacetime where the gravitational field of a celestial body is predicted to become infinite by general relativity in a way that does not ... In this case the universe did not collapse into a black hole, because currently-known calculations and ...

For more information, see Gravitational singularity - Wikipedia

I found an answer from imagine.gsfc.nasa.gov

Ask an Astrophysicist: Black Holes

Mar 8, 2017 ... If light has no mass, how can it get trapped in a Black Hole? ...... How can a Black Hole have zero volume and infinite density? .... How is it possible for black holes to emit matter even if their gravity field is so intense?

For more information, see Ask an Astrophysicist: Black Holes

I found an answer from www.scientificamerican.com

According to the big bang theory, all the matter in the universe ...

According to relativity theory, space does not like to remain static; for all but the ... A black hole is surrounded by an event horizon, a surface inside which we cannot see. ... if you squeeze matter to a high enough density, it will collapse into a black hole, .... universe expands from infinite density without forming a black hole.

For more information, see According to the big bang theory, all the matter in the universe ...