How long is 1 hour in space?
The clocks in space tick more slowly than clocks on Earth., HENCE COVERING LESS TIME AS COMPARED TO EARTH IN THE SAME DURATION. One hour on Earth is 0.0026 seconds in space. Thus, upon calculation we find that one hour on Earth is equivalent to seven years in space.
This form of time dilation is also real, and it's because in Einstein's theory of general relativity, gravity can bend spacetime, and therefore time itself. The closer the clock is to the source of gravitation, the slower time passes; the farther away the clock is from gravity, the faster time will pass.
Scientists propose that clocks measure the numerical order of material change in space, where space is a fundamental entity; time itself is not a fundamental physical entity.
For example, time goes slower at the ISS, lagging approximately 0.01 seconds for every 12 Earth months passed.
Scientists have recently observed for the first time that, on an epigenetic level, astronauts age more slowly during long-term simulated space travel than they would have if their feet had been planted on Planet Earth.
With each second that ticks by, around the world 4 babies are born, 2 people die, Earth travels 18 1/2 miles through space, and the International Space Station travels 5 miles around us. In that same second, an unbelievable 20,000 cans of Coca-Cola are sold, along with 9 iPhones.
A sol is slightly longer than an Earth day. It is approximately 24 hours, 39 minutes, 35 seconds long. A Martian year is approximately 668 sols, equivalent to approximately 687 Earth days or 1.88 Earth years.
Let us assume that time has stopped. Since any kind of motion is a measurement of time, the Universe would have to come to a standstill. Molecules would stop vibrating. Since everything is at a perfect standstill, including your neural impulses, no one would even know that time has stopped.
No it is not possible to have space and matter without time. Space only has meaning within time. The reason why space is around us is because it takes a finite amount of time for light to reach each unique point in space from us and vice versa. Space is formed through time and only exists within the context of time.
Albert Einstein once wrote: People like us who believe in physics know that the distinction between past, present and future is only a stubbornly persistent illusion. Time, in other words, he said, is an illusion. Many physicists since have shared this view, that true reality is timeless.
Is time a illusion?
According to theoretical physicist Carlo Rovelli, time is an illusion: our naive perception of its flow doesn't correspond to physical reality. Indeed, as Rovelli argues in The Order of Time, much more is illusory, including Isaac Newton's picture of a universally ticking clock.
In short, space-time would contain the entire history of reality, with each past, present or future event occupying a clearly determined place in it, from the very beginning and for ever. The past would therefore still exist, just as the future already exists, but somewhere other than where we are now present.
Astronauts age slowly because of time-dilation effects. Time appears to move slower near massive objects because the object's gravitational force bends space-time. This phenomenon is called as gravitational time dilation which means time moves slower as the gravity increases.
Outer space is not completely empty—it is a near perfect vacuum containing a low density of particles, predominantly a plasma of hydrogen and helium, as well as electromagnetic radiation, magnetic fields, neutrinos, dust, and cosmic rays.
As far as we can tell, the four-dimensional space-time continuum is unbounded in the space directions (space is infinite) the time dimension seems to have a singularity (about 13.8 billion years before now) and so it is impossible to talk in a sensible way about events before that time.
We can't smell space directly, because our noses don't work in a vacuum. But astronauts aboard the ISS have reported that they notice a metallic aroma – like the smell of welding fumes – on the surface of their spacesuits once the airlock has re-pressurised.
Yes, people still age when they're in comas.
People do age while in a coma although some people have argued that such people age at a slower rate.
A total of 18 people have lost their lives either while in space or in preparation for a space mission, in four separate incidents. Given the risks involved in space flight, this number is surprisingly … low. The two worst disasters both involved NASA's space shuttle.
After about one minute circulation effectively stops. The lack of oxygen to the brain renders you unconscious in less than 15 seconds, eventually killing you.
What would happen if Earth lost gravity for 1 second?
When gravity disappears for 1 second the outwards force balanced by the gravity would be released causing a massive explosion.
The measurement of time began with the invention of sundials in ancient Egypt some time prior to 1500 B.C. However, the time the Egyptians measured was not the same as the time today's clocks measure. For the Egyptians, and indeed for a further three millennia, the basic unit of time was the period of daylight.
The Earth orbits around the sun every 365.25 days.
While the Earth is rotating on its axis, it also orbits the sun. It takes a little more than 365 days for the Earth to make a complete trip around the sun. Other planets have different orbital times.
In Earth's early history, a day was 23.5 hours and a year lasted 372 days.
The simple answer is, "Yes, it is possible to stop time. All you need to do is travel at light speed." The practice is, admittedly, a bit more difficult. Addressing this issue requires a more thorough exposition on Special Relativity, the first of Einstein's two Relativity Theories.
The bending of space-time causes objects to move on a curved path and that curvature of space is what we know as gravity. Mathematically one can go backwards or forwards in the three spatial dimensions. But time doesn't share this multi-directional freedom.
“Time is an intrinsic part of how our biological systems, cognition, and social systems function,” says Valtteri Arstila, who studies the philosophy and psychology of time at the University of Turku, Finland. “You cannot live without it, and you would not want to do it either.”
Unfortunately, no. You can, however, get a glimpse of the fourth dimension through an optical illusion called the Necker cube (labeled A in the figure below). There are two ways to interpret this shape: as a box oriented slightly left and down (B), or as its mirror image (C).
Physics > Space and Time
According to Einstein , you need to describe where you are not only in three-dimensional space — length, width and height — but also in time. Time is the fourth dimension. So to know where you are, you have to know what time it is.
4d space is space with 4 spatial dimensions. We have 3: Height, width, and depth. Obviously, this makes 3d space. 4d space can be defined similarly, except it has an extra dimension that we 3d creatures cannot perceive.
Who proved time?
Great advances in accurate time-keeping were made by Galileo Galilei and especially Christiaan Huygens with the invention of pendulum-driven clocks along with the invention of the minute hand by Jost Burgi.
- APPRECIATE PAINFUL MEMORIES FROM THE PAST SO YOU CAN SET THEM FREE. ...
- EASE WORRIES ABOUT THE FUTURE BY TAKING CONTROL OF THE PRESENT. ...
- SNUGGLE INTO THE NOW. ...
- DON'T ALLOW IDEAS ABOUT AGE TO HOLD YOU BACK. ...
- EXPERIENCE REALITY AS A CHILD DOES.
Specifically, spacetime might emerge from the materials we usually think of as living in the universe—matter and energy itself. “It's not [that] we first have space and time and then we add in some matter,” Wüthrich says. “Rather something material may be a necessary condition for there to be space and time.
In the Special Theory of Relativity, Einstein determined that time is relative—in other words, the rate at which time passes depends on your frame of reference.
The future, though it remains unknown to you, seems to be written already. Einstein himself described it thus: “People like us, who believe in physics, know that the distinction between past, present and future is only a stubbornly persistent illusion.”
In everyday life, we inhabit a space of three dimensions – a vast 'cupboard' with height, width and depth, well known for centuries. Less obviously, we can consider time as an additional, fourth dimension, as Einstein famously revealed.
In the beginning, there was an infinitely dense, tiny ball of matter. Then, it all went bang, giving rise to the atoms, molecules, stars and galaxies we see today.
Traveling into the Future
While it's not possible (yet) to travel to the future fast than the rate at which we're doing it now, it is possible to speed up the passage of time. But, it only happens in small increments of time. And, it has only happened (so far) to very few people who have traveled off Earth's surface.
While some people live in the past because they don't want to deal with the present, others live in the past for fear of what may come in the future. Just like watching that favorite old sitcom you've seen 100 times, looking back on your life doesn't bring any surprises.
From the viewpoint of an observer outside the black hole, time stops. For example, an object falling into the hole would appear frozen in time at the edge of the hole. Inside a black hole is where the real mystery lies. According to Einstein's theory, time and space, in a way, trade places inside the hole.
How cold is space?
Space is very, very cold. The baseline temperature of outer space is 2.7 kelvins (opens in new tab) — minus 454.81 degrees Fahrenheit, or minus 270.45 degrees Celsius — meaning it is barely above absolute zero, the point at which molecular motion stops.
Researchers found a number of genes that inhibit hair growth were more active during spaceflight, suggesting it may grow more slowly or stop altogether while in orbit. But the study also suggests the hair follicles of men and women may react differently to the environment in space.
Many religious persons, including many scientists, hold that God created the universe and the various processes driving physical and biological evolution and that these processes then resulted in the creation of galaxies, our solar system, and life on Earth.
There's a limit to how much of the universe we can see. The observable universe is finite in that it hasn't existed forever. It extends 46 billion light years in every direction from us. (While our universe is 13.8 billion years old, the observable universe reaches further since the universe is expanding).
In a new study, Stanford physicists Andrei Linde and Vitaly Vanchurin have calculated the number of all possible universes, coming up with an answer of 10^10^16.
The trite answer is that both space and time were created at the big bang about 14 billion years ago, so there is nothing beyond the universe. However, much of the universe exists beyond the observable universe, which is maybe about 90 billion light years across.
Scientists now consider it unlikely the universe has an end – a region where the galaxies stop or where there would be a barrier of some kind marking the end of space. But nobody knows for sure.
The observable Universe is bounded by a 'cosmic horizon', much like the horizon at sea. Just as we know there's more ocean over the horizon, we know there are more galaxies (possibly an infinite number) beyond the cosmic horizon.
Another way to measure a day is to count the amount of time it takes for a planet to completely spin around and make one full rotation. This is called a sidereal day. On Earth, a sidereal day is almost exactly 23 hours and 56 minutes.
The first planet they land on is close to a supermassive black hole, dubbed Gargantuan, whose gravitational pull causes massive waves on the planet that toss their spacecraft about. Its proximity to the black hole also causes an extreme time dilation, where one hour on the distant planet equals 7 years on Earth.
How long is 1 second in space?
Explanation: The light-second is unit of length useful in astronomy, Telecommunications and relativistic physics. It is defined as the distance light travels in free space in one second and is equal or exactly 299,792,458m.
Astronauts need space suits to stay alive. You could only last 15 seconds without a spacesuit — you'd die of asphyxiation or you'll freeze. If there's any air left in your lungs, they will rupture.
Jupiter formed less than 3 million years after the birth of the solar system, making it the eldest planet.
Yes, the Sun - in fact, our whole solar system - orbits around the center of the Milky Way Galaxy. We are moving at an average velocity of 828,000 km/hr. But even at that high rate, it still takes us about 230 million years to make one complete orbit around the Milky Way!
A Once-in-a-Lifetime Alignment
Calculations reveal it is possible for a spacecraft launched in the late 1970s to visit all four giant outer planets, using the gravity of each planet to swing the spacecraft on to the next. This alignment occurs once every 176 years.
Scientists estimate that the heart, blood vessels, bones, and muscle deteriorate about 10 times faster in space than in natural aging.
That's because all massless particles are able to travel at this speed, and since light is massless, it can travel at that speed.
