How does time travel work
“Time travel” often conjures up the most wonderful ideas from millennials, who jump from Victorian times to telephone kiosks, through the fourth dimension. But, of course, you don’t need a time machine or fancy wormhole for years.
As you may have noticed, we are constantly taking time travel. At the most basic level, time is the speed of change in the universe – we are constantly changing whether we like it or not. We age, planets move around the sun, things crash.
We measure the passage of time in seconds, minutes, hours, and years, but that doesn’t mean time is flowing at a constant rate. Just as the water in the river has slowed sharply along the river, time has moved at different speeds in different places. In other words, time is relative.
But what is the cause of this fluctuation, from the cradle to the grave? It all comes down to the relationship between time and space. Humans romp on long, wide, deep three dimensional dimensions. Time to join the party is the most important fourth dimension. Time cannot leave space, space can’t leave time. The two are one: continuum of space-time continuum. Any event in the universe must involve space and time.
In this article, we’ll look at the real, everyday time-travel methods of our universe, and some more far-fetched ways of dancing through the fourth dimension.
The future of time
If you want to be a little faster than the next person, you need to take advantage of space time. Global satellite positioning satellites shut down the satellite every day, adding one billionth of a second every day. Because the satellite is farther from the earth, time passes faster in orbit. On this surface, the quality of the planet is being delayed and slowed down at a small rate.
We call this effect gravitational time dilation. According to Einstein’s general theory of relativity, gravity is a curve in space and time, and astronomers observe it regularly when they study light moving around large enough objects. For example, a particularly large sun may cause another straight beam to bend, which we call gravitational lensing.
What does this have to do with time? Remember that any event in the universe must involve space and time. Gravity is not just drawing space, it’s pulling time.
You will not be able to notice the subtle variations in time, but A large enough object will produce A great change – like A supermassive black hole at the center of the Milky Way galaxy Sagittarius a. here, 4 million solar masses exist as A single point of infinite density, known as A singularity [source: NASA]. Bypassing the black hole for some time (no descent), you will experience half the earth’s speed. In other words, you’ll spend five years discovering that it’s been ten years on earth [source: Davis].
Speed also plays a role in the speed of our experience. The closer you get to the closer you get to what we’re talking about the unbreakable speed limit of the universe. For example, in a speeding train, the clock moves much slower than the stationary clock. Passengers won’t feel any difference, but at the end of the trip, the speeding clock slows down a billionth of a second. If such a train would reach 99.999% of the speed of light, it would be only a year before the train station passes in 223. [source: Davis].
In fact, the hypothetical commuter goes to the future. But what about the past? Can you imagine the fastest starship can reverse flow?
We have determined that time travel is always going on. Scientists have proved this point in experiments, a fundamental aspect of Einstein’s theory of relativity. You can do it. It’s just a question of how fast a trip will be. But what about past trips? A glimpse of the night sky should provide an answer.
The Milky Way is about 100, 000 light-years across, so light from distant stars could take thousands of years to reach the earth. Skimming the light, you basically look back. When astronomers measured the cosmic microwave background radiation, they watched for more than 10 billion years, entering the original cosmic era. But can we do better than that?
There is nothing in Einstein’s theory that precludes travel from the past, but pressing the button and returning to yesterday’s premises violates the law of causality or causality. An event occurs in our universe and leads to an endless cycle of one-way events. In each case, the cause is before the effect. Try to imagine a different reality, for example, the victim of a murder who died of a gunshot wound before being shot. It goes against the reality that we know; Therefore, many scientists view time travel as an impossible thing.
Some scientists have come up with the idea of using travel that travels faster than light. After all, if the time is getting slower and slower, as the object gets closer to the speed of light, then it’s possible that more than that velocity can reverse the time. Of course, when an object approaches the speed of light, its relativistic mass increases until the speed of light becomes infinite. It is impossible to accelerate infinite quality at a faster rate than this. The technology of warp speed can theoretically deceive the universal speed limit by pushing the space-time bubble in the universe, but even so, huge, long – term energy costs.
But if time travel to the past and the future, less depends on the speculative space propulsion technology, and more on the existing phenomena of the universe? Set up a black hole course.
Circle a black hole long enough that the expansion of gravitational time will lead you into the future. But what happens if you fly directly into the cosmic giant’s belly? Most scientists think this black hole might shatter you, but a unique black hole may not be: Kerr black hole or kerring.
In 1963, the New Zealand mathematician Roy Kerr proposed the first realistic theory of spinning black holes. This concept depends on the neutron star, this is the collapse of massive stars the size of Manhattan, but with the quality of the sun, the earth [source: add to the male. Kerr hypothesis, if dying stars collapse into rotating neutron stars, they will stop them into the singularity of centrifugal force. Because of the black hole does not have the singularity, Kerr believes that enter the center without having to worry about infinite gravity is safe.
If cole’s black hole exists, scientists suspect that we might pass through them and leave through a white hole. Think of this as the tail end of the black hole. Instead of pulling everything into gravity, the white hole pushes everything out, or pushes it into another era, or even another universe.
Kerr black holes are purely theoretical, but if they do exist, it provides a one-way trip of the past or future for adventurous time travelers. While an extremely advanced civilization might develop a means of calibrating this time-travel method, it is not known when and where there might be a “wild” Kerr black hole.
Theoretical Kerr black holes are not the only possible cosmic shortcuts in the past or future. Everything from “star trek: deep space 9” to “donadado” is welcome, and the same theoretical Einstein – rosen bridge is available for consideration. But, of course, you know this better wormhole.
Einstein’s general theory of relativity allows for the existence of a worm hole, because it indicates that any mass curve is spatio-temporal. To understand the curve, think of two people holding the sheets and tightening them. If a person puts a baseball on a sheet, the weight of the ball rolls to the middle of the sheet and bends the sheet over that point. Now, if the marble is placed on the edge of the same sheet, it will move towards the baseball due to the curve.
In this simplified example, space is depicted as a two-dimensional plane instead of a four dimensional one. Imagine that this piece of paper is folded, leaving a space between the top and the bottom. Placing a baseball on the top side causes curvature to form. If you place the same quality at the bottom of a baseball position at the top of the plate, the second quality will eventually meet the baseball. This is similar to how wormholes develop.
In space, masses of pressure on different parts of the universe may eventually form a tunnel. In theory, the tunnel will connect two different times and allow them to pass. Of course, there may also be some unforeseen physical or quantum properties that prevent this wormhole from happening. Even if they do exist, they can be very unstable.
According to astrophysicist Stephen Hawking, wormholes may exist in the universe’s smallest environmental quantum bubble. Here, tiny tunnels twinkle, instantly connect different places and time, like a constantly changing “slide and ladder” game.
Such wormholes may be too small and too short for human time travel, but will we ever learn to capture, stabilize, and expand them? Of course, hawking says, as long as you’re ready for some feedback. If we artificially prolong the tunnel’s life by folding space-time, radiation feedback loops, like audio feedback, can be used to destroy the microphone and damage time tunnels.