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The answer to that question is twofold:
1. A black hole of sufficient size itself is not very bright at all. Initially, it was thought that all radiation was absorbed into a black hole, rendering it effectively invisible. Stephen Hawking, however, calculated that a black hole may radiate at an insignificantly low temperature, a phenomenon now known as Hawking radiation.
2. Around a black hole of sufficient size, accretion disks of matter may form. The matter falls in towards the black hole, and before it enters the hole's event horizon is crushed and heated to extreme temperatures. The radiation this produces may be observed in various spectra and may be very bright indeed.
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Can energy be produce from a black hole?
Sure; please note that black holes are among the brightest objects in the Universe. For more details, do some reading about quasars. Briefly, some quasars shine as bright as a hundred galaxies - and a quasar is a black hole.
What are the signs of a black hole?
Matter falling onto a black hole can form an accretion disk heated by friction, forming some of the brightest objects in the universe. These bright objects are indicative of nuclear meltdown due to the stretching and compaction of matter as it nears the event horizon. Preceding the accretion disk, there is a increase in the speed of star revolving about a central black hole as it is gravitationally attracted toward a black hole.
What is the difference between a black hole and a quasar?
A quasar is a galaxy the gives off huge amounts of radiation, sometimes having a black hole at it's center. A black hole is a dead star that was big enough to "curl back in itself, like a snake eating it's tail."1 Or picking oneself up and carrying yourself by your bootstraps.One is a single star, one is a galaxy.(1 my words)
What does a black hole do with what it suck in?
The material sucked in to a black hole becomes part of the black hole - that is, a black hole crushes matter to an nearly no size, at all.
What would a black hole look like from earth?
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.
What bright Galaxy has a black hole in its center?
It seems that just about EVERY galaxy has a huge ("supermassive") black hole in its center.
What is a bright region in the sky that last only a few days?
black hole
What is a mysterious bright starlike object in the galxy core?
It is believed by the scientists that there is a super massive black hole at the center of the galaxy which is created due to collision of many black holes and it is million times larger than our sun. It is very bright because of the large light attracted towards it. We can say that the mysterious bright object is a black hole which seems to be bright but all the lights is from another source.
If light does not escape a black hole does it just sit there?
Light continues to circle around the 'black hole' in what is called the 'Schwartchild radius before disappearing into the event horizon'. This is how that scientists are said to find the 'black holes'; they find the bright 'circles' with a black hole in it. light cannot escape a black hole because the escape velocity (the velocity needed to escape the gravitation pull of a celestial body) of a black hole exceeds the speed of light.
What does a star look like when it dies?
it looks like on tv when a black hole blows up but with a bright light
What is the best way to study a black hole?
To view distant galaxies and stars and other 'bright' objects and analyse the suspected black holes effect. Effect being the movement around the black hole, or the loss of visual contact of that object.
Can energy be produce from a black hole?
Sure; please note that black holes are among the brightest objects in the Universe. For more details, do some reading about quasars. Briefly, some quasars shine as bright as a hundred galaxies - and a quasar is a black hole.
What are the signs of a black hole?
Matter falling onto a black hole can form an accretion disk heated by friction, forming some of the brightest objects in the universe. These bright objects are indicative of nuclear meltdown due to the stretching and compaction of matter as it nears the event horizon. Preceding the accretion disk, there is a increase in the speed of star revolving about a central black hole as it is gravitationally attracted toward a black hole.
What happens when an old star that suddenly expands and grows very bright is called?
When a star is old and expands it turns into a black hole.
What is the difference between a black hole and a quasar?
A quasar is a galaxy the gives off huge amounts of radiation, sometimes having a black hole at it's center. A black hole is a dead star that was big enough to "curl back in itself, like a snake eating it's tail."1 Or picking oneself up and carrying yourself by your bootstraps.One is a single star, one is a galaxy.(1 my words)
Why does a key hole look black?
A keyhole looks black because there is no source of light inside the keyhole, and very little light gets into the hole from outside to illuminate it. Just as the bottom of the ocean, when you have no source of light, appears black to the human eye, until you use some source of light.
Is a black hole so bright that we cant see it?
Quite on the contrary - it's so dim that we can't see it: no light escapes from the hole. The only emission indicating presence of a black hole may come from accreting matter surrounding a hole. Although Hawking's radiation is associated with event horizon, it is undetectable at such distances.
