Question:

Blackholes!! An explanation plz!!!?

by Guest56873  |  earlier

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Ok all i really want to know is what do you think happens to you if you come into the gravitational pull of a blackhole and plz feel free to put as much detail as you want I WILL READ!!!

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  1. You can observe space, time, and gravity near a black hole in a way that's trivial on Earth.  Gravity is not simply an invisible force that moves things around.  It distorts space and time.  

    Let's look at a really large star that will eventually because a black hole.  It's made of plasma and it's very bright and hot.  It has a lot of surface gravity, just like our sun.  After going through several stage and cooling down, it shrinks.  This increases the gravity at the surface.  As the gravity at the  surface increases, time slows down.  It was originally thought that when a star was close to becomming a black hole, time would actually stop.  This is why for a long time scientists thought black holes were impossible.  

    Once a black hole has formed, the same phenomenon can be observed.  If you drop something into a black hole, as it gets near the event horizon it seems to go slower and slower.  To the poor sucker falling into the black hole, the universe outside seems to go faster and faster.  Assuming he survives the fall long enough, he can watch a lot of time in the universe go by.

      

    Like other people said, the guy falling into the black hole is dead.  For one, matter falling into the black hole gets very hot and emits gamma rays or x-rays from outside the event horizon.  Those should incinerate you.  Also, others mentioned the spagetification effect caused by gravity pulling stronger on your legs than your head.  You should also expect to physically collide with other matter and be destroyed that way.


  2. the black hole will start to stretch you. at first it wont feel bad but then it will pull you into the size of a spaghetti noodle and you would be burned at 100 million degrees Celsius.

  3. What revo emag says is correct in the case of a fairly small black hole, but if it's massive enough, the tidal force, that's the difference between the gravity pull on your feet and your head can be small enough for you to survive as far as the event horizon.  But once you're inside any black hole, you're toast,  nothing can move further from the singularity at the centre than it already is; it can only get closer, so blood circulation and all your other metabolic processes would stop.

  4. This is a bit long, but it has to be if I'm going to explain all of it to you.  I've also included what would happen to you near the end of my answer.  :)

    When a star uses up all of its fuel, it begins to swell for a while (often resulting in a supernova if the star is large enough), before collapsing back in on itself -- the collapse is caused by the star's mass, because of the force of gravity.

    If the star is small to medium in size, the heat energy within it will overpower the force of gravity fairly early on, resulting in a white dwarf.

    If the star is large, the heat energy will not be able to overcome its gravity, but the nuclear force within the star eventually stops the collapse, resulting in a neutron star (pulsar).

    If the star is giant (at least 100x as massive as our sun), even the nuclear force within the star cannot overcome the gravity.  In this case, its mass continues to collapse into a smaller and smaller space, becoming extremely dense, until it forms a black hole.

    Keep in mind that black holes are not fully understood, so everything I'm about to tell you is still in the theory stage.

    A black hole is theorized to be a sort of tear in space-time, caused by an infinite amount of matter being compressed into an infinitely small space.  This "point" where matter is squeezed together is called "the singularity", and this is what exerts the massive gravitational pull on everything that crosses its path.

    The "event horizon" of a black hole is the point past which NOTHING can escape from the black hole's gravity.  If you were outside of the event horizon, you would still be far enough away to escape (if you were able to generate enough energy to reach the speeds needed to escape... but it would be possible), but if you tried to go beyond the event horizon, you would be hopelessly lost to the black hole's gravity.  Basically, the event horizon isn't really a physical object, it's just a sort of border around the singularity.

    The event horizon itself would appear as a black circle.  It's impossible for us to see past, or even get any readings from beyond the EH (I'm going to abbreviate event horizon from now on, to make typing it easier), as not even LIGHT, the fastest moving thing in our universe, can escape from a black hole.  Since light can't escape, this means that nothing else can escape either -- nothing can travel faster than the speed of light.  Our eyes rely entirely on light being reflected off of something and back to our retinas in order to see.  If light travels into the EH, it would be unable to reflect back to our eyes because the singularity's (which I mentioned earlier) force wouldn't allow it to come back to our eyes.

    Objects behind the black hole (not in it, behind it) appear distorted, as the black hole bends any light that doesn't cross the EH, resulting in a bizarre kaleidoscope effect.

    If you were to cross over the EH all of the matter in your body would be pulled out, until you were stretched out into a single line of the smallest particles making up your body.  Finally, all of the matter that makes up your body would be compressed down and added to the singularity.  Where your matter ends up... no one knows.  Perhaps it remains as part of the singularity forever.

    It's unlikely that you'd survive, even if you re-emerged on the other side (assuming there is another side) and were reassembled.  Black holes give off an incredible amount of radiation.  You'd be severally burned long before you even reached the singularity.

    All in all, they're very fascinating things.  :)

  5. if a person would even think about  approaching a blackhole about 10 feet from it you would be pulled towards it..because the force is so ferocious that you wouldnt be able to withstand it at all...not even light could pass through or near a black hole all paths through space are warped inwards towards the center of the volume, preventing all matter and radiation within it from escaping.

  6. The gravitational pull from a black hole, even a small one, would reach a long ways into the surrounding space.  A blackhole with the mass of our sun would have a gravitational pull the same as our sun.  AND if you were the same distance away, you would have the same effects MINUS the solar radiation (sun light=heat).

  7. blood for the blood god gave a great answer... I have wondered about a lot of those things. thanks. good question!

  8. A black hole is defined as a region created by the collapse of a dead star with so much mass in so small a volume, that, since gravity is proportional to mass, its gravitational field is so strong that nothing near it can escape, even light, hence the name black hole.

    Theoretically, though, if you were to approach a black hole say feet first, the difference in the gravitational force at your feet would be so much greater than at your head, you would be pulled like a string of spaghetti before you reached the event horizon.

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