Does a black hole have mass, if so, what causes it?

Answer 1

black holes have a lot of mass... in fact it is due the the massive mass that it became a black hole... the more mass the stronger the gravity... the black hole has so much mass and so much gravity that it clapses into itself... and the gravity suck every thing into it... even light cant escape (photon)...

it is a misconception that people thing black hole is a rip in space... things just fall into it... the name is what caused the confusion... when early scienitsts observed the skys for star and galaxies, they used radio/microwaves to detect their existance... they see an area where its black and nothing seems to be coming back from it, they named it black hole... but its not a rip in space, a massive sphere with highest gravity/density possible, that the theoratical physicists call it singularity.

Answer 2

Black holes do have mass. They are formed when a massive star runs out fuel The star will through off its outer shell of gas in a supernova explosion and depending on the stars mass it will become either a neutron star or a black hole.With no nuclear reactions taking place and all the energy gone, it can no longer support its mass and this begins to collapse around its core to a single point of extremely dense matter. This stellar remanant is now a black hole.So even if it is just a very small point it still is mass.

Answer 3

A Black Hole is not nothing! They are the most concentrated form of matter (and gravity) in the entire Universe.
When a large star has exhausted all the fuel that can generate a fusion reaction, its gravity suddenly takes over and compresses most of that stars mass into a very, very, small space. This tiny ball of extremely dense matter is the Black hole or 'singularity'.
Since the effects of gravity obey the inverse square law, if you halve the distance to the BH, the gravitational attraction increases by four.
In fact within an area called the event horizon the force of gravity is so great that the BHs escape velocity is higher than the speed of light. ( The escape velocity of Earth is 7 miles per second, the BHs escape velocity is way over 186,000 miles per sec.)
The name,'Black Hole' is derived from the fact that light cannot escape (because it is not fast enough) and so the singularity cannot be seen directly. The only way we know they are there is by the gravitational effects on nearby stars.

Answer 4

Anything made of matter has mass, and black holes are about the densest forms of matter you can find.. there are two kinds of black holes... those formed from collapsing stars, and those found at the centre of galaxies (which becomes the axis point for the galaxies spin). Recently, on 17th October, a collapsed-star black hole was discovered that is the weight of 16 stars, while being only a fraction of the size of a single star... Yet black holes at the centre of galaxies can weigh several million times more than a single star (The black hole at the centre of the milky way weighs 3.7million times more than our sun). A black hole's mass creates a gravitational pull so strong that even light, the friskiest thing known to man, cannot escape. All matter of things are innevitably pulled into black holes, and their addition causes the growth of the black hole, and black holes may join forces... it has been suggested that the ginormous black holes at the centre of galaxies may be made from merged collapsed-star black holes.

Answer 5

A black hole is the collapsed remnants of a giant star; specifically, one whose mass in life was at least 3 times as massive as the Sun is now. During its main sequence (regular lifetime), the star fuses hydrogen into helium in its core. This provides heat and pressure to prevent the star from collapsing under its own gravity. When the hydrogen runs out, the star collapses a bit until the temperature and pressure inside the core is high enough to fuse helium into carbon. The helium supply is exhausted relatively quickly compared to the hydrogen supply, and the carbon, which fuses after the helium runs out, goes even quicker. This cycle of fusing heavier and heavier elements persists until the star builds up a core of iron. Fusing iron does not release energy, however. It absorbs it. So when the star begins to squeeze the iron core in order to fuse it, the energy needed to sustain the star against its own gravity is not produced. The star's core collapses catastrophically. The rebound results in a supernova that blows the outer layers of the star into space.

When the core collapses, its surface gravity increases. When its radius shrinks below a certain value (called the Schwartzchild radius), the surface gravity is so intense that light cannot escape from it. In other words, the escape velocity is greater than 300,000 km/s. (By comparison, Earth's escape velocity is only about 11 km/s). When the core collapses past this critical radius, it is officially a black hole. Since nothing can travel faster than light, anything that falls into the black hole is stuck forever.

So yes, a black hole has mass. In fact, its mass must be at least 1.44 times the mass of the Sun. The mass of a black hole is the mass of the original star's core. If a black hole sucks up any matter after forming, its mass can increase.

Answer 6

A black hole is created when a supermassive star explodes, because of the gargantuan size of the star, only the outer layer of the star blast outwards, where as the inner core of the star is smashed inwards...

this inwards smashing of the star doesnt stop until all of the inner core matter is compressed to a microscopic point...

so, even if the last remnants of the black hole is microscopic it still counts as matter...

and that matter has to be taken into account as mass..

hope that answers your question...

Answer 7

Black holes have enormous mass, so much that the gravity field created will not allow even light to escape - hence the blackness.

Answer 8

If anything a black hole IS mass.

It is not an actual hole. It is mass packed so dense it's gravity is so great it sucks in everything...including light...and hence you can not see it. It makes it LOOK like a hole.

If earth came near one earth would be reduced to the size of a pea and become part of the black hole.

Answer 9

The Singularity on the middle of the Black hollow has a similar mass, and consequently a similar gravity simply by fact the famous guy or woman it got here from. the only distinction is which you would be able to get lots nearer to the middle of mass of the Singularity and nevertheless have all of the mass of the Singularity in front of you. And, as you be conscious of, gravity is greater advantageous the nearer you get to the middle of mass of an merchandise. the gap from the Singularity of a small great-huge Black hollow from its journey Horizon is barely approximately 0.5 the gap from the Earth to the Moon. The famous guy or woman it got here from became many cases better and greater huge than our own solar. the closest you have gotten gotten to the unique famous guy or woman might have been the floor of that famous guy or woman, which could have been many, many hundreds of cases farther faraway from the middle of mass of the famous guy or woman than the progression Horizon is faraway from the ensuing Singularity. in certainty, the gravity is so reliable on the progression Horizon simply by fact it is so on the brink of the middle of mass of the Singularity. .

Answer 10

from neutral stars to black hole? sorry i forgot but this is my answer