Black hole questions!?

Question

Where is the nearest black hole?
How do astronomars know?
How is it observed?
How close is it to the earth?
What kind of hole is it?
How was it formed?

All the questions have to do with the nearst black hole to us.. thx

What would happen if you fell in a black hole?

Answer 1

Nearest? How big does it have to be? There are theories that say there are billions of black holes smaller than pin heads that orbit the Earth, sucking up any matter that comes within nanometres of them. Who knows?
How do astronomers know? Well, they don't. Black holes are attempts at explaining some otherwise in-explicable phenomina in space.
How is it observed? Practically, black holes are so dense and massive that they "suck" matter and light towards them through the force of gravity. They are thus observed not directly, but by the flurry of things careering towards them in space.
How close to Earth? See above!
What kind of hole? It's not really a hole! It's actually more like a super dense blob, which sucks in light, so looks LIKE a hole.
How was it formed? Many different explanations, though the most popular theory is the collapse of a MASSIVE star, in an explosion known as a Supernova. It's big, bright, and sometimes leaves these dense blobby black holes.

Answer 2

The nearest stellar (formed formed from a star that died) is 1600 light year from earth in the constellation Sagittarius. The nearest supermassive black hole is at the centre of our galaxy about 70,000 light years.

Astronomers know because the stellar black hole is a binary star system (two stars revolving around each other). so the black hole sucks up matter from it's companion star. That matter gets super heated as it is about to fall of into the black hole and thus emits strong bursts of x rays.The supermassive black hole was discovered when scientists saw bursts of x rays coming from centres of various galaxies and pointed their telescopes at the centre of our galaxy and they saw this ( http://www.eso.org/public/outreach/press-rel/pr-2002/video/vid-02-02.mpg ).

It's a hole in a sense if u consider general relativity which treats the space (and time) as a flat sheet (or fabric). Heavy objects like sun and the planets bend this sheet of space and time to some extent but black holes bend it to known or extreme extents (or may even tear this sheet of space and time).

Stellar black holes are formed from massive stars that collapse under the influence of their own gravity. The material of a star is pushed outwards by the heat from the nuclear reactions this is balanced by the influence of gravity which pulls the star inwards. When the star gets old the nuclear reactions stops and the gravity keeps on pulling the star inwards and inwards thus the star collapses and forms a black hole.
Supermassive black holes could have been stellar black holes that grew rapidly in size or they could been something else and formed due to the intense pressure just after the big bang.

Answer 3

The nearest black hole is in the center of our galaxy. I don't know how far that is.
We can see it with telescopes like an x-ray telescope, or radio wave telescope.
You usually can tell if it's a black hole if it has massive amounts of x-rays surrounding it. These are formed by the rapidly spinning and powerful matter falling into the black hole.
Black holes are not really "holes" They are called that because if you were able to see it without the cloud of stuff around it, it would appear black because no matter can escape its pull and therefore can not emit out towards us.
They are usually formed by very heavily massed objects colliding and joining to be even more massive to the point that no matter can escape its pull.

Answer 4

actually scientists have had some solid proof that blackholes exist. they've seen large stars being swung around and 'eaten' by a 'black' object in the sky. blackholes are the result of a star when becomes greater than its outward force when its dying, and all of that mass that used to be the star collapses into one finite point in space. the mass of this object is so great that even light itself isn't fast enough to escape from it, thus making it a 'black hole'. there is a theory that at the center of our galaxy there is a 'supermassive black hole', but that's just a theory. they are observed by watching objects around the position where they think one is located, because they definitely will affect nearby objects. black holes are not holes. they're just like balls of near infinite mass. the faster they spin, the more disklike they become. if you fell in one, the instant you touch the 'event horizon', or in other words the spiraling outside edge, the 'spegetti' effect occurs, where that part of your body is stretched out as it spirals downward. once you reach the center, you would need a doctrate degree in physics to give an explaination. but basically you just add more mass to it. and die.

Answer 5

It is in the center of the galaxy and furnish the gravity that holds all the solar systems in orbit around it. The gravity can be 100 light years across. If u were sucked into a black u would be crushed to less that an amoeba.

Answer 6

google it, baby!

took me two minutes to find out about a 'microquasar' v4641, considered a black hole only 1600 LY from us.

Answer 7

The center of our Galaxy.
They study its effect on it's environment.
It is about 30,000 light years away from us.
It is a Super massive black hole.
Still speculative

Answer 8

the nearest is not the one at the center of our galaxy. it is V 4641 and it is about 1600 lightyears away. google it.