Researchers have stated in their recent study that astronauts on the International Space Station age slightly slower than people on Earth. But what is the reason for this?why time passes more slowly for objects closer to the center of the Earth?
Time may seem faster or slower to us than to others in a different part of space-time. This means that astronauts on the International Space Station age slightly more slowly than people on Earth.
A study has found that astronauts on long missions may be vulnerable to unique stressors that can affect human aging.
The Time is relative
We have all heard the saying that time is relative. We all measure our experience of space-time differently. That’s because space-time isn’t flat—it’s curved and can be warped by matter and energy. For example, time passes faster for people who live in the mountains than for those who live at sea level.
So depending on our position and speed, time can seem faster or slower than others in a different part of space-time, and for astronauts on the International Space Station, this means they age at a slightly slower rate than people on Earth.
This is due to the effects of time dilation. Time seems to move more slowly near massive objects because the gravitational force of that object bends space-time. This phenomenon is called “gravitational time dilation.” In short, this expression means that time increases with gravity; It moves slower.
This is why time passes more slowly for objects closer to the center of the Earth, where gravity is stronger
That doesn’t mean you can lock yourself in a basement just to outlive the rest of us here on Earth. Because if you live underground, you’ll age just a fraction of a second slower than everyone else on Earth for the rest of your life.
The second factor is called “relativistic time dilation,” where time moves faster. A classic example of this is the twin scenario. One of the twins is launched into space in a spaceship that travels close to the speed of light, and the other remains on Earth. When the space traveler twin returns to Earth, he has only aged a few years, only to find that his sister, who was on Earth, has aged over a decade.
Read more : Is time travel possible?
Of course, no one has ever done that experiment in real life, but there is evidence that it is real. When scientists sent an atomic clock into orbit and returned it (while keeping an identical clock here on Earth), they found it was running slightly behind the Earth clock. Because gravitational time dilation and relative velocity time dilation can happen simultaneously. A good way to think about it is to consider astronauts living on the International Space Station.
Currently, an international crew of seven lives and works aboard the International Space Station, orbiting Earth every 90 minutes, according to NASA. They float 260 miles above Earth, where Earth’s gravitational pull is weaker than its surface. This means that time must run faster for them than for people on Earth. But the space station also orbits the Earth at a speed of about five miles per second. This means that time must also slow down for astronauts relative to people on the surface.
You’d think that time might be uniform. Still, their velocity time dilation has a greater effect than their gravitational time dilation, so astronauts end up aging more slowly than people on Earth. Although the difference is insignificant, after spending six months on the International Space Station, astronauts have aged about 0.005 seconds less than the rest of us.
That means when former NASA astronaut Scott Kelly returned home from a year-long stint on the ISS in 2016, he was technically 0.01 seconds shorter than his astronaut twin brother Mark Kelly, who stayed on Earth.
Recording the first X-ray image of an atom with a “quantum needle”
Recording the first X-ray image of an atom with a “quantum needle”. For the first time, Ohio University scientists have managed to record the first X-ray image of an atom using a quantum needle.
Water play in the space station is not just fun and games
Water play in the space station is not just fun and games
In this artice we’re going to read about why water play in the space station is not just fun and games .In an interview with Nature magazine, he said about his job: I am an astronaut of the European Space Agency. Last year, I spent five months—from late April to mid-October—on the International Space Station (ISS), with the last month as station commander. Before returning to the field, my team and I took some time to play with the water. Here, inside the International Space Station, I show how water behaves in zero gravity.
There are a few tricks you can use to make sure the water stays where you want it. Surface tension holds the water bubble together, and you can move it by gently pulling on it using a straw or blowing on it. If the bubble is small enough, you can drink it. We recycle all the water inside the spacecraft.
Weightlessness is not only exciting but also an opportunity to study fundamental physics. There is a lot of research on fluid dynamics in space stations. A study that I personally participated in deals with the loosening behavior of different types of liquids and mixtures of liquids and gases in containers. The results are very important for the design of fuel tanks, especially for space applications.
This photo was taken in the Japanese test module. It’s the largest single module on the ISS, so we often use it to talk to the media or school students. When we communicate with them, we use things like the balls behind my head that are models of the planets and the moon. The round thing behind me is the module airlock. We use it to deploy satellites as well as hardware like scanners for science experiments.
This was the second time I went to the International Space Station. I quickly adapt to the space and enjoy the feeling of weightlessness very much. It’s much harder for me to come back down to earth.
I don’t know when I will go there again. We’ll see how the US-led Artemis program to return humans to the moon evolves over the next decade. Maybe I will get another chance.
Cristoferti was a member of the Crew-4 mission carried out by SpaceX. At that time, he arrived at the space station with the “Dragon” capsule to begin his 6-month stay on April 27. It should be mentioned that the “Cro-4” mission was the second space flight of “Cristoforti”. He previously stayed on the space station from November 2014 to June 2015.
Why does time move forward?
Why does time move forward? No matter how ambiguous we are about the phenomenon of time, we agree on one thing, and that is that time always moves forward.
Why does time move forward?
Recently, a group in Australia has investigated the category of moving time forward and how it occurs. Before this, it was thought to be one of the fundamental principles of the natural world, but apparently there is a more important reason for this.
We all know that time only moves forward. No matter how many attempts have been made to change it, we know that broken glass will never repair itself and people will never be young again after aging. There are many hypotheses for the cause of this phenomenon, but for a long time, it has been thought that this one-way movement is one of the fundamental and integral parts of nature.
But based on new research conducted by Joan Vaccaro of Griffith University in Australia, it is said that this is not the main issue, and there is probably a deeper and more solid reason for time to move forward. In other words, it can be said that there must be a very careful difference between two different time directions. These two directions are actually the past and the future, and there is a factor that always leads us to the future and the opposite never happens.
Let’s back up for a second. It seems that this category is one of the most exciting and unimaginable aspects of physics. The mystery of time seems ambiguous because the forward movement of time is important in human life. But if we look at them individually at the atomic and molecular scale, then the movement of time forward or backward will not make much of a difference for these particles, and the particles will continue to behave regardless of the movement of time forward or backward.
We should keep in mind that our main discussion here is not about space, because you shouldn’t expect that moving objects in space won’t change their location anyway. Therefore, scientists believed for a long time that there must be a basic reason for the expansion of the universe as time moves forward, and they did not imagine this for the category of space itself. This view is actually known as the asymmetry between space and time. The best example to express inconsistency is that the equations of the laws of motion and stability have inhomogeneous functions in time and space. Vaccaro says:
In the relationship between space and time, it is easier to understand and receive space; Because space is something that simply exists. But time is something that always pushes us forward.
His new plan states that it is possible that the two mentioned directions for time (forward and backward) are not the same at all. Vaccaro continues: Experiments conducted on subatomic particles in the last fifty years show that nature does not behave the same in dealing with these two directions of time. Among these, we can especially mention the subatomic particles called B and K mesons, which exhibit anomalous behaviors in terms of time direction.
K and B mesons are very small subatomic particles that cannot be examined without the help of some advanced tools. But the evidence of their different behavior according to the time direction effective on them shows that the reason for this difference, instead of being related to a fundamental part of nature’s behavior, may be due to the direction in which we are moving in time. We are walking. Vaccaro explains in this context: As we move forward in time, there will always be some backward bounce, like the effects of motional instability, and in fact, this backward motion is what I intend to measure using the B and K mesons.
To carry out this research, Ms. Vaccaro rewrote the equations of quantum mechanics, taking into account that the nature of time will not be the same in two directions, and the results showed that the calculations performed can accurately explain the mechanism of our world. Vaccaro said about this: When we included this complex behavior in the model of the universe, we realized that the universe moves from a fixed state in one moment to moment-to-moment and continuous changes. In other words, this difference in the two directions of time seems to be the reason for forcing the universe to move forward.
If this issue is proven, it will mean that we have to rethink and revise our understanding and acceptance of the category of time passage and the equations affected by it. But on the other hand, this achievement may lead to new insights and findings about the more strange aspects of time. Vaccaro said in the end: Understanding how time passes and evolves brings us to a completely new perspective on the natural foundations of the phenomenon of time itself. Also, in this way, we may be able to get a better understanding and reception of amazing and exciting ideas such as traveling to the past.
Vaccaro’s calculations have been published in the Journal of Physical and Mathematical Engineering Sciences.
Gas river has a star on the outskirts of the Milky Way
France and Italy collaborate to build a lunar habitat
Solar system; Formation, planets, wonders and everything you need to know
The International Space Station
Air pollution control in South Korean style
How to disable app notifications on Android
The best reverse image search apps with direct download links
James Webb tells a new story about the birth of the Earth
What are the most important challenges for NASA?
China rejected the collision with the moon!
Technology4 months ago
Who has checked our Whatsapp profile viewed my Whatsapp August 2023
Technology4 months ago
Second WhatsApp , how to install and download dual WhatsApp August 2023
Humans1 year ago
Cell Rover analyzes the inside of cells without destroying them
Technology5 months ago
How to use ChatGPT on Android and iOS
AI12 months ago
Uber replaces human drivers with robots
Space1 year ago
We Could Be Living on The Moon by 2030
Health12 months ago
PefusiX-Imaging is a tool for imaging blood flow
Technology1 year ago
How to know that our phone has been hacked