How do scientists study about the black hole if even being near it is dangerous...taking into consideration that even light can't escape.?
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answers:
rick29148 say: all info & ideas are only theories & conjecture, not facts .................................
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John P say: Note that there are many black holes which have ben discovered by observation from Earth or from near-Earth observatories in space. Note also that no spacecraft carrying humans has been further away from Earth than the Moon. Note also that no black holes exist within our solar system.
You will thus conclude that no humans have been within many hundreds of millions of miles of any black hole.
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Mason say: Don’t they use simulations and other stuff like that? Isn’t it a more hypothetical thing they base off the little things we actually observe? That might be wronf please fact check me if you can
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Jeffrey K say: They can only study the effects its gravity has on stars and light given off by matter falling into it. No one knows what happens inside the event horizon.
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Ronald 7 say: They can study their effects
Like Saggitarius A at the centre of our Milky Way Galaxy
With the help of Infrared they can see through the dust and the Maze of Stars
Beyond all that are Stars that have been recorded orbiting the Black Hole at tremendous speeds with Mega Elyptic paths
With the distances from us being at over 100 Million Light Years, it wouldn't surprise me if some of them even got up to Light Speed and with the Relative Parralax being still able to be seen if I guess right
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Tom S say: Telescopic observations of the matter and energy near them.
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aladdinwa say: Scientists study how the Singularity affects objects and matter around the Black Hole up to the Event Horizon.
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quantumclaustrophobe say: The same way we study stars - through a telescope. We can see the effects of a black hole, including the in-falling matter that heats up to the point of emitting X-Rays.
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Eddie say: They study the surrounding area and the influence the black hole has on it
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Kaiser Wilhelm say: They use telescopes that utilize different abilities observe their effects on bodies close to them, radiation, waves that I don't understand, etc..
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Adullah M say: Sitting in the air condition room on earth why worried.
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ngc7331 say: We study how black holes affect objects near them. Since we can't be there in person, we look at BH's that are interacting with other stars.
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spot a say: They study x-rays emitted from the super-hot accretion disc, and the beams that come from poles of the black hole. The radiation does not come from inside the black hole. Everything about the inside of a black hole is speculation and hypothesis. They make mathematical models which predict a singularity at the center. This does not mean that a singularity is really in there. Hawking radiation is hypothetical only. There is no evidence for it at all. Nobody knows for sure
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Harshil say: They study the effects that the black hole has on the objects and light around it.
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Brilliant "Skippy" Answer say: They use math. Mathematics so accurately describes the universe that actually looking through a telescope has been unneccessary for decades, especailly as it relates to black holes. And in fact, there is far more we can learn about black holes by applying math than we can learn by looking through a telescope.
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Nikki say: my string theory got caught in a knot, i did not lose the string in a dark matter fantasy other-dimension, it rolled up into a fuzzy string ball called a black-hole.
schrodinger's cat likes that quantum play.
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vote_libertarian_in_2008 say: With some type of telescope, it's all they got.
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oyubir say: It is not dangerous to be near a black hole.
Black holes are just objects. It is their density that make them a black hole. If the Sun for example, had a radius of less than 3 kilometers, it would change nothing for us. It would then be a black hole. We would die because of the lack of light, of course (life or earth depends on sun light. If sun doesn't emit light, we are dead). But apart that, all would be the same. Our planet would remain at the same distance from our black-hole sun. It would rotate around it every 365.25 days. There are no change.
The only difference is that if we ever made an attempt to land on the surface of the sun, or just to pass at 3 kilometers from its radius, then we could never escape (even if we had huge speed when entering the area. even momentum could not get us out of there)
But, well, right now, things would not go well neither if you were trying to pass at 3 kilometers from the sun center (which means you'll have to go through the sun)
So, as a black hole, the sun is not more dangerous than as a sun. You could not approach it at less than 3 kilometers from its center without consequences. But that is already the case.
As CarolOklaNola said: black holes do NOT suck things.
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CarolOklaNola say: Black holes were theoretical. Black holes ave accretion disks around the event horizon of the black hole. The accretion desks are very bright and radiate light, including in the visible spectrum because of friction of dust and gas mass and the whirlpool around the rotating event horizon. Telescopes can see the accretion disks and take time exposure. The Hubble Space Telescope took a picture of an accretion disk around the event horizon of a black hole. It is online.
Scientists have been creating micro black holes in linear accelerators since 2001. They evaporate so quickly that computers have to crunch numbers for hours or days to confirm the micro black holes existed for a few trillionths if a second. Black holes do NOT "suck."
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Morningfox say: They study the light from gas and dust close the the black holes. Light that actually falls into a black hole can't escape, but we can see things that happen even a few hundred kilometers from the event horizon.
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