One that is fairly famous is Sagittarius A* - the supermassive black hole at the center of our Milky Way, about 26,000 light-years from here, and with a mass of about 4 million solar masses. For additional black holes, check the Wikipedia article "List of black holes".
Cygnus X-1
or the one at the centre of the Milky Way (our galaxy)
The one in the center of our galaxy is Sagittarius A*
OJ 287 is the largest known black hole estimated to be about the mass of 18 billion suns.
X-ray binary star Cygnus X-1. Its effect on its companion star suggested as early as 1971 that it must be a compact object with a mass too high for it to be a neutron star. (That was 2 years after the American astronomer John Wheeler coined the term 'black hole').
That would be the central galactic black hole located at Sagittarius A located at the center of our galaxy
black hole got it's name because when look at a black hole, you only see black. also if you drop an item in the black hole the item is gone because there is a hole in there. so that's how black hole get's its name
they are black and their bottomless!
It is likely that there is more than one black hole in our galaxy, but the one believed to be in the centre is called 'Sagittarius A*' (A Star). However, if it is not a black hole, then 'Sagittarius A*' refers to whatever it is found to be instead.
The supermassive black hole at the center of our Milky Way galaxy may not have a formal name yet, but takes its identification from a powerful radio source "Sagittarius A*" (where the asterisk is part of the name). Because of the discovery of this energy source it's commonly believed a black hole must be located there, powering the emissions perhaps because of the black hole's accretion disk or relativistic jets.
The first strong black hole candidate observed was in an x-ray binary system in constellation Cygnus and is called Cygnus X-1 (so named because it was a strong x-ray source). Observational evidence continues to support the notion that it could only be a black hole; its mass is estimated at a little under 15 times the mass of our sun, with a Schwarzschild radius of about 44 km.
black hole got it's name because when look at a black hole, you only see black. also if you drop an item in the black hole the item is gone because there is a hole in there. so that's how black hole get's its name
The term "Black hole" first appeared in print in an article by Ann Ewing in "Black Holes in Space" published in 1964.
they are black and their bottomless!
noone can go black hole as the name suggest it is a hole which is black so how any one can go ad com back...
Supermassive Black Hole-Muse Supermassive Black Hole-Muse
As far as we know, most, if not all galaxies have a massive black hole at their centre.
Pick anyone and there will be black hole in it.
"Cygnus" is the latin word for "swan." It is the name given to a constellation in our skies. Within this constellation is a major source of x-rays; the source of which was eventually regarded as a black hole. This was the first object that most astronomers concluded was unambiguously a black hole, a conclusion reached about thirty years ago.
A black hole is an objects with such strong gravity that not even light can escape them. If observed up close a black hole would appear as a completely black sphere.
Yeah magic Johnson was said to have conquered the black hole. That's how he got 'magic' in his name. 2012 Olympics.
The term 'black hole' is particularly appropriate in its application to the astrophysical phenomenon of the same name due to the property of the escape velocity exceeding the speed of light. This means that no light or matter escapes a black hole.
It is likely that there is more than one black hole in our galaxy, but the one believed to be in the centre is called 'Sagittarius A*' (A Star). However, if it is not a black hole, then 'Sagittarius A*' refers to whatever it is found to be instead.