It is the point at which the extreme black-hole gravity has taken such hold of approaching objects that those objects will in fact be sucked into the black hole.
Despite the fact that it is probable that a black hole lurks at the centre of our Milky Way galaxy, astronomers still know very little about these celestial monsters which vacuum up almost everything in their path, even light.
The Hubble Space Telescope recently spied a cluster of young blue stars surrounding a rare mid-weight black hole that suggests the black hole was once at the center of a dwarf galaxy.
They focused their efforts on NGC4526, mapping out the movements of the molecules at various distances from the galaxy's central black hole.
It is expected to underline warnings of a massive black hole at the heart of Britain's pensions.
Measurements undertaken with two space-based X-ray telescopes imaged the black hole at the centre of galaxy NGC 1365.
But despite being millions of times more massive than our own Sun, the black hole at the centre of our galaxy would be relatively small in cosmic terms.
The pension "black hole" at Derby City Council has increased by nearly 50% in the past year, figures have revealed.
BBC: Increase in Derby's City Council's pension 'black hole'
This supermassive black hole lies at the center of galaxy NGC 1277, which is about 220 million light years away from Earth.
FORBES: Astronomers Find One Of The Biggest Supermassive Black Holes Yet
"We are getting a look at the everyday life of a supermassive black hole like never before, " said Frederick Baganoff of the Massachusetts Institute of Technology (MIT), US, who presented the new data on behalf of an international team at the American Astronomical Society meeting in Seattle.
Our own galaxy, the Milky Way, has a colossal black hole at its core, too, which is some three million times the mass of our Sun.
BBC: NEWS | Science/Nature | Deepest X-rays tell merger story
Mr Wilson denied there was a "black-hole" at the centre of his accounts and said he was disappointed the memo had been leaked.
Later, allow yourselves to be sucked into a black hole of relaxation at the Lakeside Spa and use your included 50% discount for two 50-minute massages.
But it looks smart at the moment as rivals pour resources into the black hole of politically correct vehicle development that American consumers are still rejecting.
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Using an array of 10 powerful radio telescopes, aimed at the galaxy BL Lacertae, the researchers studied a black hole just as it was sending forth a blazar jet.
In an extreme case of the newsworthiness bias at work, news outlets ran stories about how the new cyclotron in Switzerland might just create a black hole that would instantly swallow up the earth.
FORBES: Shocking Truth: Newsworthiness Bias Crushes Women and Children
Third, the unending cataclysm of the last three years has drawn attention away from playing politics, at least for those trying to keep the economy from going black hole.
At the 1.2-mile point, Fridjon stands at the edge of a cave-like crevasse, gripping each hiker in turn as they peer into the pitch-black hole.
At these energies and distances, gravity is not the dominant force in a black hole.
If you were to assume that every point in the universe contained some information, then even a small office would be so densely packed with particles that it would collapse in on itself like a black hole, says Raphael Bousso, a physics professor at the University of California, Berkeley.
At the moment people are "paying enormous fees for these applications which go into a black hole", she added.
And it created, at Guantanamo Bay, a legal black hole that has become a worldwide symbol of the way our country has turned its back on human rights and the law.
Secure Communities compels local governments to hold thousands of people suspected of being undocumented immigrants at local taxpayer expense and turn them over to ICE, where they are funneled into the black hole of immigration detention, often without access to adequate legal representation.
Even the most dance-floor-friendly Gaga hit has a black hole of fear at its center.
However, at a speech Friday at a legal conference in Los Angeles, she talked about how she had been "sucked into the black hole, the vortex" of death penalty cases 18 years ago when she represented Smith.
"We compared what you see in these galaxies with what you see in the field galaxy population, other galaxies at the same epoch and distance, and there is a stark difference - far more star formation and black hole growth, " the Cambridge University scientist and Royal Society research fellow explained to the BBC News website.
BBC: NEWS | Science/Nature | Deepest X-rays tell merger story
Just off the island, you can take a dive at some of the best scuba sites in the world, including the famous Cod Hole, or fish for black marlin, tuna and swordfish on the Ribbon Reefs.
When this sort of star implodes, to create a black hole, it generates jets of material that punch their way out of the collapsing mass at near light-speed, to produce extremely high-energy emissions of light.
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