0
As you might imagine, it's very difficult to observe black holes. For a very long time, we weren't even sure we _could_. As it happens, there are a few aspects of black holes that make it possible to detect their presence, but their nature prevents us from directly observing what occurs inside the singularity.
Since we can't observe them, the main way scientists understand black holes is through mathematics. Karl Schwartzchild first predicted them as one solution to the Einstein field equations at the heart of Einstein's General Theory of Relativity, back in 1915. Later scientists found additional solutions that also pointed toward the existence of black holes, and helped refine our prediction of the behavior of space-time near them.
Quantum field theory has been used, as well. One of the best known cases is Dr. Stephen Hawking's prediction, in 1974, that black holes should act like a black body, radiating energy in an amount inversely proportional to the surface gravity of the black hole. The amount of 'Hawking radiation' produced by a mass the size of a star ends up being very small. A black hole with the mass of our sun would emit only 9 × 10−29 watts.
What else can I help you with?
How do you know that blackholes exist?
It is a tricky question because black holes are invisible, but scientists know that they are exist because black holes distort light, so it kind of change the light and also it sucks everything into it, so when scientists see stars starting to disappear, thats mean there is a black hole.
Did scientist send unmanned spaceships into a black hole to gather information?
No, scientists have not sent unmanned spaceships into a black hole to gather information. Black holes are extremely dangerous environments due to their immense gravitational pull, making it currently impossible to retrieve information from inside a black hole using spacecraft. Scientists study black holes indirectly by observing their effects on surrounding matter and light.
What are black holes and how are they identified?
Black holes are the remains of a giant star that has had its gravity collapse upon itself. Black holes suck in any matter that gets within it's gravitational range and smashes it down into tiny particles. It goes inside the black hole of it and is never seen again. Scientists do not know what happens after the matter is sucked in because black holes do not illuminate any light (Its gravity is so strong it pulls in light around it that would normally reveal it). Black holes are identified by a check list of characteristics. (Super massive, Rogue, etc)
If nobody has ever seen a black hole how do you know what they do?
People know what black holes can do because of the aftermath. Stars and planets have been completely destroyed.
What technology do scientists use to see black holes?
The way astronomers find black holes Is by using x-ray imaging from one of the many types of telescopes that orbit the earth. Black holes give off an incredible amount of x-ray waves. This is the only evidence I know of they use.
What do scientists what to know more about in space?
Black holes
How does a black holes acquire greatest mass?
Most black holes are stellar mass black holes with masses comparable to those of large stars as they form from the collapse of massive stars. Scientists know of the existence of supermassive black holes that are millions to billions of times the mass of our sun and can be found in the centers of most galaxies. Scientists still do not know how these black holes become so massive.
How do you know blackholes exist?
It is a tricky question because black holes are invisible, but scientists know that they are exist because black holes distort light, so it kind of change the light and also it sucks everything into it, so when scientists see stars starting to disappear, thats mean there is a black hole.
How do you know that blackholes exist?
It is a tricky question because black holes are invisible, but scientists know that they are exist because black holes distort light, so it kind of change the light and also it sucks everything into it, so when scientists see stars starting to disappear, thats mean there is a black hole.
How do people know that there was a blackhole if they don't see it?
Scientists can detect black holes by using x-rays and gamma rays. Black holes still can release matter, and black holes give off a lot off x and gamma rays.
If scientists cannot see black holes and do not know for certain that they exist why might studying them be important?
The assumptions are not quite correct.Scientists CAN see black holes. In fact, black holes are among the brightest objects in the Universe. Of course, light can't escape from WITHIN the black hole; rather, what we see is the accretion disk. Also, scientists are PRETTY SURE that black holes are real. As to why it is important: Black holes are fascinating objects by themselves. They also seem to play an important role in galaxy formation.
Did scientist send unmanned spaceships into a black hole to gather information?
No, scientists have not sent unmanned spaceships into a black hole to gather information. Black holes are extremely dangerous environments due to their immense gravitational pull, making it currently impossible to retrieve information from inside a black hole using spacecraft. Scientists study black holes indirectly by observing their effects on surrounding matter and light.
Is dark matter excreted from black holes?
No. Black holes do not give off anything other than small amounts of Hawking radiation. That note aside, scientists do not know what dark matter is or what its origin is.
What are black holes and how are they identified?
Black holes are the remains of a giant star that has had its gravity collapse upon itself. Black holes suck in any matter that gets within it's gravitational range and smashes it down into tiny particles. It goes inside the black hole of it and is never seen again. Scientists do not know what happens after the matter is sucked in because black holes do not illuminate any light (Its gravity is so strong it pulls in light around it that would normally reveal it). Black holes are identified by a check list of characteristics. (Super massive, Rogue, etc)
Why are you safe from black holes?
Why am *I* safe from black holes? Because the nearest one from my planet is 1600 light years away. I don't know if that means YOU are safe from black holes -- I don't know the distance between your planet and the nearest black hole -- but I know my safety is assured.
How does a black hole suck you up?
Since black holes have a huge mass, objects are attracted to it. Once you reach a point called the Event Horizon, good luck getting out. YOU WILL NOT. We do not know much about death by black holes at this time, but some scientists believe that once you reach a certain point, you will be ripped to a strand of atoms. I do not recommend going near a black hole.
Can you reach a black hole?
No, we don't know of any black holes close enough to get to.
