Could time travel be possible?
Could time travel be possible?
The shortest answer to that question is yes. As you read this, you are moving into the future at a remarkable speed of one second. In other words, you can always move into the future at the same speed. You are also constantly moving into the future while watching TV or doing housework. However, the journey into the future that we and you are contemplating is different from the second-by-second journey into the future.
Such is the fascination with the concept of time travel that nearly 400 movies have been made to date about travel to the future. Popular movies such as Dr. Who, Dr. Tho, Star Trek, and Back to the Future are examples of well-known movies about time travel. In these movies, the first character in the story goes into a strange device to travel to the future or the past. The events that the characters in these movies experience in the past change the course of their current lives. However, although time travel has countless fans, there is no one in the real world who has managed such a feat. Time travel seems to be impossible until now. Leading physicist Stephen Hawking, who died a few years ago, has an interesting take on time travel. In Black Holes and Baby Universes, the physicist sees the lack of tourists from the future to our present as the best reason why time travel is impossible. According to Hawking, we already know that humans are unable to travel in time with current knowledge. Even if humans had the ability to travel to the past in the distant future, they would have to come from the future to the past and we would interact with them. This is why, in Hawking’s view, time travel is not even possible in the future.
Meanwhile, some of the theories of scientists about time travel are in line with science. For example, Albert Einstein’s special theory of relativity. According to Einstein, time is an absurd idea that moves depending on the observer. An observer moving at a speed close to the speed of light will perceive time and its effects such as aging and boredom much slower than an observer moving at a normal speed. To prove Einstein’s theory, we can refer to astronaut Scott Kelly. The astronaut was slightly less old than his brother the year he was in space. There are other theories about time travel. Among all these theories, wormholes, black holes and string theory are the most widely accepted in the scientific community. It is interesting to note that the special theory of relativity was proposed by Einstein in 1905. This theory, along with general relativity, is considered the cornerstone of modern physics. Special relativity explains the relationship between space and time for things that are constantly moving at high speed in a straight line. No human being has ever moved at the speed of light. However, astronauts in the space station orbited the Earth at a speed of 28,160 kilometers. One of these astronauts is Scott Kelly, whose name we have already mentioned. Scott has a twin brother named Mark. He was born after his brother. Scott was in orbit for 520 days. His brother Mark was in space for only 54 days. Scott’s longer presence in space than his brother’s has resulted in him closing the gap between the two in terms of birth. The slower aging of astronauts at a close distance from Earth’s orbit may not seem that important, but the extent of time between humans on Earth and spacecraft or satellites shows a marked difference. As you know, many satellites orbit the Earth. GPS communicates with a network of these satellites to determine the position of users on the ground. The satellites we are talking about are 20,100 kilometers away from the Earth and orbit the Earth at a speed of 14,000 kilometers. According to special relativity, if two objects are moving, one at a very high speed and the other at a very low speed, the passage of time affects the first object later than the second.
How does general relativity explain the time lag of GPS satellites?
GPS Satellites are equipped with an atomic clock. This clock is very accurate. The American Physical Society has published some interesting reports in the journal Physics Central. According to these reports, the satellite moves very fast around the Earth, giving the satellite a time difference of about 7 microseconds per day.
According to general relativity, clocks that are closer to the center of a large gravitational mass like the Earth calculate time more slowly than clocks that are very far away from that gravitational mass. Due to the fact that the GPS satellites are farther from the center of the Earth than the clocks we use on Earth, scientists add another 45 microseconds to the GPS satellite clock each day.
The scientists subtract the negative 7 microseconds mentioned above from the positive 45 microseconds to get a result of 38 microseconds. Simply put.
The scientists subtract the negative 7 microseconds mentioned above from the positive 45 microseconds to get a result of 38 microseconds. Simply put, to maintain accurate positioning of GPS, scientists subtract 38 microseconds from the satellite clock GPS each day. Time travel in microseconds may not be as important as the very small time difference experienced by the Scott brothers in space. However, because of the great precision of today’s GPP technology, this difference cannot simply be ignored.
Do wormholes take people back in time?
NASA has made some interesting claims about time travel. Scientists at the Space Institute believe that general relativity offers possibilities for time travel.
However, the space travel methods proposed by NASA are not yet applicable in the real world. Wormholes are theoretically tunnels for passage through time-space that connect different points in time or geographical locations in the real world.
For this reason, wormholes play an important role in science fiction about time travel. However, despite the dramatic influence of science fiction on wormhole theory, no wormholes have yet been discovered in the real world. Stephen Hsu, a professor of theoretical physics at the College of Oregon, told Space.com that no one believes humans will find a wormhole anytime soon.
Aside from the fact that wormholes are indistinguishable, the size of wormholes is another obstacle to the possibility of time travel using wormholes. Early wormholes are expected to be very small. The entrance of a wormhole could be about 10 ^ -33 cm in size. After the expansion of the universe, wormholes might have expanded and become larger. However, the story is not that simple. It is predicted that wormholes are very unstable and disappear in the blink of an eye before anyone can pass through them to pass the time. Special materials must be used to stabilize the wormhole. According to scientists, it is not clear whether such a substance exists in the universe. Can we rely on other theories about time travel? It seems very difficult to apply Einstein’s theories about travel at work. However, some scientists have proposed other theories for travel to the future and to the past. All of these theories have one major problem. The human body cannot withstand the pull of these theories.
The theory of infinite cylinders Astronomer Frank Tipler has proposed another theory for time travel. This theory, also known as the “Tipler Cylinder,” proposes a mechanism in which matter 10 times larger than the mass of the sun is housed in very long, dense cylinders. The Anderson Institute, which studies time travel, believes the Tippler cylinder is a black hole. If this black hole spins billions of times per minute, it can transport the spaceship that is near it into the past. The cylinder theory has an infinite number of big problems. As the name suggests, this cylinder must be extremely long or made of unknown materials. So, it can be said that it is unlikely that even in the future, the conditions of infinite cylinder theory will be present for time travel. Donut Time Theory In this theory, scientists propose a model for the time machine, which consists of a curved time-space (donut-shaped vacuum space, surrounded by celestial bodies with ordinary matter). According to this theory, it is possible for future humans to visit their past generations if humans create the conditions to create such an atmosphere. The machine also has problems based on this theory. First, this machine cannot transport people to a time before the date of its manufacture. The second drawback, which seems more important, is that the invention and construction of such a machine depends on the human ability to manipulate gravitational forces. So it can be said that while this theory may be theoretically possible, modern man is incapable of such feats. What is told about time travel in books and movies? It is interesting to know that in a poem written in 400 BC, the concept of time travel is mentioned. This poem is known as “Mahabharata” in historical texts. For this reason, it can be said that time travel is one of the oldest human dreams. As we explore theories of time travel together, your desire for time travel has probably doubled. Therefore, it is not uninteresting to look into the books and movies on time travel. Interesting books about time travel The Time Machine, by William Heinemann The Restaurant at the End of the Universe, by Douglas Adams Outlander book collection by Diana Gabaldon Thief of Time by Terry Prachett Famous movies about time travel Back to the Future movie series Midnight in Paris Interstellar Doctor Strange Edge of Tomorrow Tenet