# How do we know what happens at the event horizon of a black hole?

## How do you find the event horizon of a black hole?

The Schwarzschild radius (event horizon) just marks the radius of a sphere past which we can get no particles, no light, no information. RS = km = meters = x 10^ m.

## Does time stop at the event horizon of a black hole?

To a faraway observer, your time slows down and appears to stop for you at the horizon. Time never stops for you. … So if are far from a black hole, at the horizon, or falling inside, your measure of time is the same. To a faraway observer, your time slows down and appears to stop for you at the horizon.

## How big is the event horizon of a black hole?

The Basics

There is simply a region, or boundary, in space around a black hole beyond which we cannot see. This boundary is called the event horizon. The radius of the event horizon (proportional to the mass) is very small, only 30 kilometers for a non-spinning black hole with the mass of 10 Suns.

## How do we know time stops in a black hole?

Near a black hole, the slowing of time is extreme. From the viewpoint of an observer outside the black hole, time stops. For example, an object falling into the hole would appear frozen in time at the edge of the hole. … According to Einstein’s theory, time and space, in a way, trade places inside the hole.

## What is the true shape of a black hole?

The topology of the event horizon of a black hole at equilibrium is always spherical. For non-rotating (static) black holes the geometry of the event horizon is precisely spherical, while for rotating black holes the event horizon is oblate.

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## What’s inside a black hole?

The event horizon is where the escape speed exceeds the speed of light: you’d have to be going faster than light (which is impossible for any bit of matter) to escape the black hole’s gravity. Inside the event horizon is where physics goes crazy. … A singularity is what all the matter in a black hole gets crushed into.

## Could a human survive a black hole?

Nothing escapes a black hole. Any trip into a black hole would be one way. The gravity is too strong and you could not go back in space and time to return home. Aside from this, your body would be stretched and destroyed by the warping of space and the amount of radiation surrounding the event horizon.

## Is black hole faster than light?

No, black holes cannot travel faster than light. In black hole there is no time and space. So there is no speed.

## Which is the nearest black hole to Earth?

Astronomers have a new candidate in their search for the nearest black hole to Earth. It’s about 1,000 light-years away, or roughly 9.5 thousand, million, million km, in the Constellation Telescopium. That might not sound very close, but on the scale of the Universe, it’s actually right next door.6 мая 2020 г.

## What happens if a person goes into a black hole?

Of course, no matter what type of black hole you fall into, you’re ultimately going to get torn apart by the extreme gravity. No material, especially fleshy human bodies, could survive intact. So once you pass beyond the edge of the event horizon, you’re done.

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## Will our Sun become a black hole?

Our Sun, for example, is not massive enough to become a black hole. Four billion years from now when the Sun runs out of the available nuclear fuel in its core, our Sun will die a quiet death. Stars of this type end their history as white dwarf stars.

## How big does a black hole have to be to destroy Earth?

A BLACK hole just one millimetre in size would destroy Earth, ripping the planet up bit-by-bit and “completely killing us”, an expert has warned.

## Can time be stopped?

The simple answer is, “Yes, it is possible to stop time. All you need to do is travel at light speed.” The practice is, admittedly, a bit more difficult. … To phrase this tenet in a more friendly manner, it means that a light beam’s speed remains unchanged even if the observer moves relative to it.

## How can you kill a black hole?

Black holes, the insatiable monsters of the universe, are impossible to kill with any of the weapons in our grasp. The only thing that can hasten a black hole’s demise is a cable made of cosmic strings, a hypothetical material predicted by string theory.