What's Inside A Black Hole?

[Papi]

http://www.guardian.co.uk/science/blog/200...c/10/black-hole

Thanks to German astronomers, we now have the most accurate measurements yet of the giant black hole that sits at the centre of our galaxy.

And what a beast it is: as wide as Earth's orbit around the sun and 4.3 million times more massive than our home star. Lucky, then, that it is 27,000 light years away.

Researchers from the Max Planck Institute for Extraterrestrial Physics used two telescopes operated by the European Southern Observatory in Chile to watch stars as they circled the centre of the Milky Way. The 16-year study, now published in the Astrophysical Journal, has proved beyond doubt that lurking at the very centre of the galaxy is a black hole.

Black holes are clearly intriguing, and not just to scientists. Earlier today, a colleague known more for his in-depth investigations into the wrongdoings of governments and multinationals than his knowledge of quantum gravity, asked what seems like a simple question: "What's inside a black hole?" Sensing my attempt at an answer wasn't good enough, I called Stefan Gillessen, one of the authors of the latest study, for an explanation.

To begin with, he pointed out that scientists should only ask questions that can be answered, and since it is impossible to get information out of a black hole (in the form of light, for example) we can never really know. But let's not give up just yet.

Black holes are created when large stars explode and collapse in on themselves. Many will have masses similar to our own sun, but others grow to much larger masses.

Theoretical physicists have thought long and hard about what goes on inside black holes and their conclusions are mind-bending to say the least. Despite the fact that they suck in material from anything and everything that strays too close, they are empty. The mass of a black hole is confined to an infinitely small point at its centre, called a singularity.

How much blackness surrounds a singularity – in effect, the size of the black hole – is defined by the strength of its gravitational pull. Far away from a black hole, light can zip around as usual, lighting up the heavens as it goes. But closer to a black hole, gravity becomes stronger and stronger until eventually, not even light can move fast enough to escape its pull. This is why a singularity is surrounded by a vast sphere of darkness. The point at which the hole's gravity becomes strong enough to prevent light escaping is known as the event horizon.

"To know what's inside a black hole, we need something to come out from behind the event horizon, and reach us via a telescope. The easiest thing for astronomers would be light, but a black hole is so massive not even light can escape so no information can get out," he said. "You could go and look, but once you're in you never come back out again."

Gillessen admits to feeling uncomfortable about the concept of singularities, but the late John Wheeler, who coined the term "black hole" in 1967, put it nicely in his 1999 autobiography, "Geons, Black Holes and Quantum Foam: A Life in Physics". He said black holes teach us that "space can be crumpled like a piece of paper into an infinitesimal dot, that time can be extinguished like a blown out flame, and that the laws of physics that we regard as sacred, as immutable, are anything but."

[JustME]

He said black holes teach us that "space can be crumpled like a piece of paper into an infinitesimal dot, that time can be extinguished like a blown out flame, and that the laws of physics that we regard as sacred, as immutable, are anything but."

interesting.....

i like....

[AK47 JATHA LION]

Yes, Scientists have learnt that seemingly nothing can escape the pull of a black hole. The gravity is immense. Not even light can escape the pull of its gravity.

Scientists have also learnt that there is a Super-massive black hole within every Galaxy, including our own Milky way galaxy, they play a big role within each galaxy.

You can see the destructive power of black holes. U can see entire galaxies swallowed by a black hole. Although the black hole itself cannot be seen since it is dark matter, the effects can be seen. When star systems are ripped apart and swallowed, giant circular streams can be seen on space by powerful telescopes.

As u nearer the centre of a black hole, time slows. TIme elapses much slower. for example, 1 earth day could have passed yet if u were near a black hole, only an hour might of passed.

Dark matter makes up most of our universe as we understand, yet most of it is unseen . Alot of this dark matter is thought to be things like black holes.

[Degh-Tegh-Fathe]

If "you" were going to a blackhole u would never actually reach it...if u could survive the IMMENSE gravity from ripping you apart, u wud just sort of float there getting closer and closer but never actually making it inside...from inside u would just rip right through but to "you" time would just start holding still...Its amazing the rules of physics break down at the even horizon....Makes u wunder...There is NOTHING in a singularity, its just a rip through space, think about it, nothing...u wud think of darkness but u have to have light for it to be dark, ur mind cant comprehend it.

thithai thoo samarath jithai koe naahi |

Where You are, Almighty Lord, there is no one else.

[AK47 JATHA LION]

A rip in the fabric of space and time itself. Even time is not a constant when effected by gravity. I believe god to be the only constant and timeless.

[sikhness]

So, are we all very slowly being pulled into this black hole?

[Degh-Tegh-Fathe]

So, are we all very slowly being pulled into this black hole?

lol no, we orbit around it just like we orbit the sun and the moon obrits around us, we we were going to be inveloped by it, it would take a LONGGG time and i mean LONGGGG

[njjassa]

am forcing myself to say a "white hole" or perhaps another black hole lol....... but seriously i was actually the universe on history channel and heard one of the scientist talk about black hole .... he said it has to be dark matter or may even be a gateway to another galaxy or perhaps another dimension......

[Papi]

Anything scientist know is only from theory, hopefully The Large Hadron Collider will shed some light on this mystery along with lots of other mysteries pestering Physicists today.