I keep hearing that there is a huge black hole with no stars etc. should i be scared of it?
2007-09-02 13:50:20 · 7 answers · asked by Anonymous in Science & Mathematics ➔ Astronomy & Space
It is a void and simple empty space, NOT a black hole.
Black holes are pure gravity that hungrily sucks in matter.
This newly discovered void is a simple blank area in space. The problem is that the temperatures in it are colder than they should be and we don't know why; about 2 degrees C colder.
When the big bang went off it made a fairly uniform distribution of matter and energy throughout the universe; over 13.7 billion years a lot of the matter has collected in stars and planets. It has also been blown up and spread out by novas and supernovas. This is the cycle that keeps the universe running.
The Milky Way is a spiral galaxy and our sun, Sol, is in the Orion Arm of that spiral. Overhead the Milky Way looks like a starfish made of stars that is being spun very fast so that its arms are curved and all radiating from its center. In between each arm is an area of space that is bare of stars. The natural formation of the galaxy does this; so voids like the one newly discovered are far from unknown.
What is strange is that this void is the largest found is colder than normal space, and we don't know why. Even the intergalactic space between galaxies has dust and gas in it, but this void seems to be de-void of that. A black hole could clear out an area like that, but black holes create radiation as they suck things in so we can detect them. The black holes have no color, and only emit a weird radiation called Hawking Radiation that we can't easily detect. However, we have known about the x-ray for a long time and as black holes break up the matter being sucked in they emit x-rays.
On reason for the void could be a black hole at it's center that has no more matter to suck in. It may even have disappeared through evaporation. However, that doesn't explain the reason for the slight decrease in temperature.
The average temperature of the Universe is between 2-4 degrees C above zero. It is caused by the original microwave of the radiation from the big bang so there is a universal background of radiation and every so slight heat around the universe. But, it seems to be different here. Could this be a sign of dark matter?
Three-Quarters of the universe is missing, we estimate the mass of all we can see, including the black holes, and then we calculate the effects of gravity that such a mass would cause. That's when a huge error creeps into the equation. Because we can't see it, it has been dubbed dark matter.
The universe exploded in the big bang and expanded from there, it should be slowing down since the original explosion stopped 13.7 billion years ago. However, the rate of expansion is increasing. The only thing that can do this is adding some extra energy into the system; since we can't see it has been called "dark energy?"
We don't know what this void is, we think it is just an expanse of nothing, but the reason for there being nothing there is an interesting one and if may not be as empty as we think. It could have dark energy or dark matter in it.
2007-09-02 14:45:28 · answer #1 · answered by Dan S 7 · 0⤊ 0⤋
no. its not a black hole. its just an area with basically no matter or energy. it poses no threat to you and its billions of light years away. its just kind of weird because usually there is a galaxy or a few stars or some energy that is pretty evenly distribuated though space. so its weird to find an area with no matter. some have speculated that its the place where the big bang happened, because if
2007-09-02 14:05:36 · answer #2 · answered by Anonymous · 0⤊ 0⤋
Its not actually a black hole, just a void of space which nothing lies in. Its billions of light years away so it cant effect us anyway.
And to be honest; if it was to effect us, the Earth would be ripped appart and everyone would die instantly so you wont have time to worry about it! Dont start worrying yourself on behalf of the entire planet!
2007-09-02 14:36:36 · answer #3 · answered by ? 6 · 0⤊ 0⤋
It is not a black hole as such.
It is a massive area of space that is emitting no electro-magnetic radiation.
They have put a quirky spin on it by saying it is a huge area of dark matter.
2007-09-03 02:04:12 · answer #4 · answered by Billy Butthead 7 · 0⤊ 0⤋
No, you should not be scared of it. It isn't even a black hole. It's a "void," simply a place that has very little matter in it. It's one of the biggest voids yet identified.
2007-09-02 14:05:49 · answer #5 · answered by ZikZak 6 · 0⤊ 0⤋
A black hollow can, in theory, have any mass. Even tiny a lot decrease than the mass of an electron. super stars will unavoidably kind black holes. it is stated as the "Chandrasekhar decrease", and its evidence demands typical Relativity.
2016-10-19 21:47:33 · answer #6 · answered by Anonymous · 0⤊ 0⤋
Its something like 4 billion light years away - what is there to be afraid of? It can't affect Earth, it certainly can't affect you.
That void has been there all along, we were only just recently able to detect it.
Finding something that was always there doesn't it make it a threat all of a sudden. Especially since its so far away.
2007-09-02 14:28:35 · answer #7 · answered by Anonymous · 0⤊ 0⤋