From what I've heard and read about the black hole, I don't believe anyone can enter a black hole and live. From what I've read, it sounds like you would be compressed. It would be like being crushed slowly without being touched. I'm just wondering if we can travel underneath it. If so, then we would know for sure it leads to another galaxy. It would be proof that time and space can be "torn" to go somewhere else. (Aside: You are only compressed in the relativistic dimension of travel. As you approach the speed of light you get less thick to an outside observer. To you, the traveler, everything is just fine.)
Time doesn't really exist. It's merely a concept that exists because our lives eventually come to an end. Therefore we need to keep track of time. It is impossible to go back in time because time is only a mental concept. For time travel to be possible there would have to be an infinite number of realities all playing each moment simultaneously. Even so we would have no way of accessing these alternate realities. (Aside: Einstein says something about reality that is applicable to time as well. He stated "Reality is an illusion, albeit a persistent one. ...")
Time exists because without time, the six string theory comes crashing down to a halt if you look at it carefully. It is not just a mental concept because we die, it is as real as anything else, and just because some people can't look behind the wall doesn't make it any less real. If you could time travel, the most complicated way is to send everything in reverse. But, I would most likely use the void (using the theories of alternate realities, there must be a void. otherwise the similar energy would merge (the void is the space between universes of universal radiation, and like two magnets repelling each other, the void is made up of a repelling force), for it does not accommodate time in any sort; it just merely exists, and you could basically just go from one spot of the time-space in the universe to another.
But to answer the original question, no one can because you are just being crushed into a size which most people believe to be impossible to measure, so they call it infinitely small.
Research on all the Science Fiction standbys (time travel, teleportation, etc.) is regularly reported in "Nature" magazine, a stodgy, peer-reviewed, British science publication.
I have also found material prepared by Dr. Michio Kaku, co-founder of the string field theory who has written on the role of time travel in modern physics. In one of his discussions he states:
"However, before Einstein died, he was faced with an embarrassing problem. Einstein's neighbor at Princeton, Kurt Godel, perhaps the greatest mathematical logician of the past 500 years, found a new solution to Einstein's own equations which allowed for time travel! The "river of time" now had whirlpools in which time could wrap itself into a circle. Godel's solution was quite ingenious: it postulated a universe filled with a rotating fluid. Anyone walking along the direction of rotation would find themselves back at the starting point, but backwards in time!"
"In his memoirs, Einstein wrote that he was disturbed that his equations contained solutions that allowed for time travel. But he finally concluded: the universe does not rotate, it expands (i.e. as in the Big Bang theory) and hence Godel's solution could be thrown out for "physical reasons." (Apparently, if the Big Bang was rotating, then time travel would be possible throughout the universe!)."
"Then, in 1963, Roy Kerr, a New Zealand mathematician, found a solution of Einstein's equations for a rotating black hole, which had bizarre properties. The black hole would not collapse to a point (as previously thought) but into a spinning ring (of neutrons). The ring would be circulating so rapidly that centrifugal force would keep the ring from collapsing under gravity. The ring, in turn, acts like the Looking Glass of Alice. Anyone walking through the ring would not die, but could pass through the ring into an alternate universe. Since then, hundreds of other "wormhole" solutions have been found to Einstein's equations. These wormholes connect not only two regions of space (hence the name) but also two regions of time as well. In principle, they can be used as time machines."
Time is both a concept and physical, it is a concept because it exists without being touched by anything, it is physical because we exist in it.
Though there are mathematical ways that may allow one to travel back in time, there is no real way to do that with any technology that we know of. Time is real. It is real just as space is real. We exist in the space-time continuum. In a relativistic universe, time is part of space-time. What is being debated is the nature of consciousness. And that is addressed elsewhere on the boards.
Certainly time travel does happen in a black hole, if we chose to look at it that way. It's possible in that time for the (unlucky or lucky?) traveler who sails in will slow down. It won't appear that way to that traveler, of course, but to the outside observer, things will be slowing up until those outside observers lose sight of the voyager making the trip into the unknown. Whether or not the person travels back in time, goes "through" the black hole and emerges somewhere and sometime else, or simply becomes part of the collection of matter at the bottom of the gravity well can be debated ad infinitum.
See the related question below. It is, "What is time?" It may help, or it may not.
Time is REAL, although it is an illusion, because of Einstein's General Theory of Relativity in where gravity can effect time. So you see, because of the Earth and it's mass, and the other large bodies of mass around us, it shapes our "time." If we were to go to a different planet, it would have a different "time" than our own. Where I am going with this, is that black holes have such immense gravity, that it would completely warp time around you, but they think that you can time travel in one.
It would have to be a rotating black hole so that the singularity would be ring shaped, because then it could be skipped, and thus (as is postulated) there would be an "Einstein-Rosen Bridge" that would put you into another time/universe. But, the bridge would always collapse right before entry, so you would be crushed into oblivion in the singularity.
Scientists cannot be certain, as we have yet to experiment with a black hole, but they theorize that time would slow down relative to time far from the black hole.
I could argue that it is astronomers, not machines, who make such discoveries, but if I have to nominate a machine for the honor, it would be the Hubble Space Telescope.
There is no special machine that measures that directly. Astronomers have to observe objects known to be close to the black hole (most black holes observed are part of a binary or multiple system, simply because those are easier to detect), and use one of the usual methods used in astronomy to calculate distances.
Well, obviously, if it formed a certain time ago. But I don't think you can tell the age of a black hole just by looking at it.
The weight of a black hole doesn't tear spacetime because the black hole's mass warps spacetime only around its immediate vicinity, following the curvature of general relativity. This warping allows objects to enter and exit without spacetime tearing.
yes. but the intense gravity is so strong it seems to bend time so slowly some people believe that there is no time in a black hole I WOULD JUST LIKE TO POINT OUT that time does exist in a black hole it is just extremely slow on another note if time did not exist in a black hole then a black hole would not suck things into it. so time does exist in a black hole.
Crazy as it may sound this is actually possible in a theoretical sense. That wasn't your question. You ask 'How can you do it' and that is not (currently) understood. To make a time machine with a black hole you must be able to manipulate the black hole eg. accelerate it up to within 98% of the speed of light and even though that is also theoretically possible we don't have the power or the means to accomplish that either.
Inside a black hole, time behaves differently than outside. Time slows down as you get closer to the center of a black hole, eventually stopping completely at the singularity. This means that time inside a black hole is essentially frozen.
By building a machine that travels through space (like a rocket), and fly it against the direction of the Black Hole. For as long as the thrust of your rocket is above the gravitational pull of the Black Hole, you are away.
Time in a black hole is affected by its intense gravitational pull, causing it to slow down significantly compared to time outside the black hole. This means that time passes much more slowly inside a black hole than it does outside of it.
Scientists cannot be certain, as we have yet to experiment with a black hole, but they theorize that time would slow down relative to time far from the black hole.
Time in a black hole is distorted due to the extreme gravitational pull. According to the theory of general relativity, time slows down as you get closer to the center of a black hole, eventually coming to a stop at the singularity. This means that time inside a black hole behaves differently than outside of it.
Yes. In the neighborhood of a black hole, both time and space are distorted, due to the black hole's strong gravitational attraction.
Yes the black hole can be destroyed. However, man-made objects cannot resist the gravity without getting sucked in. The only thing that can destroy a black hole is time in a process called Hawking Radiation in which the black hole evaporates over time. The smaller the black hole, the faster the process.
Near a black hole, time behaves differently due to its strong gravitational pull. According to Einstein's theory of relativity, time moves slower in the vicinity of a black hole compared to areas with weaker gravitational fields. This phenomenon is known as time dilation.
Next to the washing machine. It's fallen into the black hole behind the microwave.
Time in a black hole is a complex concept due to the extreme gravitational forces. According to the theory of general relativity, time inside a black hole is distorted, and it is believed to slow down significantly as one approaches the center, known as the singularity. This means that time as we understand it may not exist in the same way within a black hole.