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Black Holes

Black holes are regions in space created by the death of stars. Their gravitational field is so strong that even light cannot escape from it.

11,511 Questions

What shape is a hole?

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Asked by Wiki User

there is still no proper answer about the structure of a black hole,as because a black hole cant be seen.But according to assumptions the black hole spins around and thus its structure may be oval or spherical.Like anything thaat rotates, the black holes becomes flatter at the poles and broader at he equator

How do you get rid of a small hole over the lip that looks like a black head growing inwards?

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Asked by Wiki User

When treating holes left from blackheads it is best to continue using a spot treatment with salicylic acids to prevent more bacteria from getting inside.

How many years did the black death last?

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Asked by Wiki User

The latest research shows that the bubonic plague was the cause of the Black Death that swept through Europe in the 14th century and killed an estimated 75 million people, 30-60% of the European population.

The Plague has always been around, The Plague of Justinian in the 6th and 7th centuries are the first recorded attacks and cases even today, in 2010 there was a case reported in Oregon, United States.

What is bigger a black hole or a neutron star?

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Asked by Wiki User

It all relates to what you define as big.

A black hole is an infinite region in space with an infinite density. It's "event horizon" is not infinite.

If you wish to categorise between size of a neutron star and a black hole's "event horizon", then a black hole is, in most cases larger - but there are micro black holes, which exhibit all the characteristics of a black hole but have a much smaller "event horizon".

In the physical sense, everything is bigger than a black hole, but in a terminological sense (the event horizon) it would depend on the mass of the black hole.

In what movies does a spaceship go into a black hole?

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Asked by Wiki User

Event horizon did. Don't know of any others

I seem to recall that 'Star Trek the next generation' once tried to rescue a Romulan Space Craft that was powered by a black hole that got infected by something that lived inside an event horizon.

The episode dealt a lot with scrambled time lines and possible futures one of which the enterprise was blown up.

Is black hole the size of an atom?

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Asked by Wiki User

The most relevant quantity is the black hole's mass. Note that the black hole's diameter (the diameter of the event horizon, really) is directly proportional to its mass. The largest galactic black holes known seem to be around 20 billion solar masses. Check the Wikipedia "List of most massive black holes" for more details. Note that the mass of some of these black holes is not very well-known.

What do neutron and black stars have in common?

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Asked by Wiki User

Everything, they are one and the same.

See related question for an explanation.

What would happen if the sun becomes a black hole?

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Asked by Wiki User

You can rest easy tonight; our sun is not massive enough to form a black hole. If it did become one, however, we would still orbit around it, at least for a while. When a star becomes a black hole it doesn't increase in mass. The star's huge mass is compressed into a smaller area. We wouldn't have sunlight any more, but we would probably be bombarded with all kinds of radiation generated by materials being pulled into the black hole.

How can you put highlights on dyed black hair?

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Asked by Wiki User

== == * Metalex, available at Sally's Beauty Supply or other low-end supply store, or use Prell, the worst possible shampoo for your hair. * Don't ruin your hair. If you find your dark hair is too dark (not natural and you have dyed it) then go to a professional and get them to put a "glaze" on it. The glaze will soften the color. Your professional may even have a better idea. Here's a tip I just learned recently: With all the gels, mousses, sprays we put on our hair once a week you should mix warm water and baking soda and mix into a runny paste. Wet hair, then slightly towel dry it and then put the baking soda mixture into the palms of your hands and rub through your hair and make sure you get all of it! Then leave on for 15 minutes. Shampoo as usual, rinse and use condition if you like. It is healthy for the hair and gets all that sticky junk out of it. Don't do it more than once a week! * Coat it in baby oil; cover in a plastic cap; sleep in it and shampoo out in the morning. * Today I dyed my hair "dark brown" which really means jet black. I was horrified and have been searching the net all day trying to figure out how to fade it. The most talked about and the one that seems to have the best results is just using ordinary dish washing liquid instead of shampoo, using it a lot and heat fades hair dye, so when you shower do it with the hottest water you can without burning yourself. Im a hairstylist and i run into this all the time. buy a claifing shampoo, professionsl products r gonna work better. wash ur hair with it and leave it in for 10 min, repeat a few times then condition with a deep hydrating conditioner. repeat for a few ti mes you will notice a difference first time.

Application of the law of gravitation to explain the formation of black holes?

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Asked by Wiki User

Specifically for a black hole the range of gravitational influence is calculated by the "Shwarzchild Radius" and surprisingly the radius is quite small for even the biggest blackhole, If a blackhole had the mass of the earth, then the Shwarzchild radius would only be a centimeter! Meaning you would have to come with in a centimeter of the blackhole to get sucked in.

Why would a 1992 Jeep Wrangler go into 5th gear?

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Asked by Wiki User

you need to try and get codes out of the Transmission Control Module (TCM). The lamp in the Overdrive OFF switch is used to signal the various flash codes. To view flash codes, proceed as follows: # Turn ignition key ON-OFF-ON-OFF-ON finally leaving the key in the ON position. Leave the Overdrive OFF Switch in the normal overdrive (ON) position. # Immediately begin counting the number of flashes displayed by the Overdrive OFF Switch indicator lamp. # Flash codes will correspond to Powertrain Control Module codes in duration and spacing. # A code 55 identifies the end of flash code transmission. And the possible codes are: * 11 No Engine Speed Sensor Signal * 12 No Output Shaft Sensor Signal * 13 No Vehicle Speed Sensor Signal * 14 Governor Pressure Sensor Signal * 15 Throttle Position Signal * 16 Transmission Temperature Sensor * 17 Overdrive Off Switch Circuit * 18 System Voltage Out of Limits * 19 Standby Voltage Out of Limits * 21 Governor Pressure Solenoid Circuit * 22 3-4 Solenoid Circuit * 23 Torque Converter Clutch Circuit * 24 Overdrive Off Lamp Circuit * 25 EEPROM Checksum Error * 26 Governor Pressure Sensor Offset Drift * 55 End of Message If you still get no codes, then we have to explore a mechanical problem inside the transmission. Possibly the overdrive solenoid not venting or a lower valve body malfunction.

How many holes in a crumpet?

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Asked by Wiki User

Usally none, but depends upon the crumpit your eating..

In the center of the milkyway there is a supermassive black hole Is this something you should worry about?

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Asked by Sizzlingkavya

No. This supermassive black hole has a mass of 4 million times the mass of the Sun (well, that's the latest estimate), and it is at a distance of 30,000 light-years. There is no reason to believe we are getting near it in the foreseeable future.Also, it is part of the structure of our galaxy; why would we be disturbed by its presence? We should be grateful it is there.

What is Black Nazarene?

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Asked by Itchiec2

The Black Nazarene is a 400 year old wooden statue of Jesus carrying the cross. During WWII, the church that the statue was in burned down and the statue survived, During the fire it turned black. people thought of it as a miracle.

Is the TΓΌbingen University wormhole real?

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Asked by Wiki User

Worm holes are a hypothetical feature of spacetime.

Theoretically, the could exist but there is no observation data or evidence to say they do.

So without evidence, they are not real.

However, there was no evidence that planets orbited another star a century ago, so this answer could well change in the future.

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What would a black hole look like from earth?

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Asked by Wiki User

This depends on so many factors, including the distance of the black hole, the size of the black hole, and whether or not it is actively "consuming" nearby mass. Generally speaking, if a black hole is taking in mass, as the matter falls into the black hole it can form an accretion disk. When this occurs, the matter becomes heated by friction, resulting in the release of visible light, causing the accretion disk to become quite bright. If, however, a black hole isn't taking in matter, it will not be visible.

Black holes cannot be directly observed, regardless of whether or not they are actively taking in matter. Instead, they are determined indirectly by observing their gravitational interactions with their surroundings.

How deadly are black holes?

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Asked by Wiki User

Close proximity to a black hole would be fatal to a human from a gravitational effect known as spaghettification, which is basically a tidal effect which would stretch you into a long thin string. Friction or crushing effects from other infalling matter could instantly cook you or turn you into vapor; radiation from the accretion disk could also be so powerful as to instantly kill you from radiation effects which might once again sublimate you to vapor.

For larger black holes with less noticeable tidal effect and even without an accretion disk or relativistic polar jets might allow you to survive entry past the event horizon, but there would be no leaving the black hole. For an outside observer it might seem time would dilate significantly and you would seem to slow to a near-stop approaching it, but for you time might seem to pass normally and you may not even be aware of the moment you cross the horizon.

While black holes consume all unfortunate matter in their path, they are also thought to be vital to the formation and stability of galaxies including our own (supermassive black holes) - so in one sense, black holes are essential to the behavior, large-scale structure, and stability of most visible matter in the universe, and given our favorable position in the galaxy one might also say our very survival is interconnected with black holes.

Why do black holes attract light?

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Asked by Wiki User

According to the particle theory of light, light is made us of particles called photon. Black hole has very high gravity. Its escape velocity being more than that of speed of light, light is attracted towards it and it even cannot escape

by lunizah: black holes attract every thing even the light because they have a very strong attractive force and that's the reason why black holes attract light!! ^_^

Is a black hole fast?

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Asked by Staralee

Typically it will travel at the same speed as stars - since most (or all) black holes were originally stars: a few hundred kilometers per second at most. The supermassive black holes in the center of galaxies will usually stay there, without moving around much.

How do you escape a black hole?

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Asked by Wiki User

Some theories state that if you enter a black hole at a certain trajectory you can exit via a white hole in another part of our universe or different universe. Other than this there is no escape from a black hole. Hawking radiation excepted.

What equipment is needed to detect black holes?

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Asked by Wiki User

Since black holes aren't directly visible, effects they cause have to be observed. For example, optical telescopes can detect gravitational lensing when distant objects such as galaxies emit light which bends around an intermediate object with intense gravity like a black hole. Optical telescopes can also see the powerful emissions from the relativistic polar jets powered by black holes. Telescopes sensitive to x-ray frequencies can detect the energy emitted by the accretion disk around the hole, and were historically used to locate and assist in verification of the presence of black holes; such happened in observations during the search for the first verification of the existence a black holes in the X-ray binary Cygnus X-1.

Can earth ever get sucked into a black hole?

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Asked by Wiki User

That is possible, but not very likely.

What would happen if an enormous black hole appeared near earth?

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Asked by Wiki User

Then earth would be attract and eventually it will disappear.Because if we see it in a logical manner,a BLACKHOLE attracts any other body because of its strong gravitational force.Therefore our earth including our solar system and the other planets around it will eventually disappear.!

Sentence for black hole?

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Asked by Wiki User

A black hole is a type of star with excessive gravity. Here are some sentences.

  • The star was sucked into the black hole close by.
  • A black hole will even absorb light.
  • The scientist is studying a black hole.