46 billion light years in years

If the universe is 13.8 billion years old, how can it be larger than 13.8 billion light years across? First off the universe isn't even expanding at the speed of light so that messes things up in the first place. It is 13.4 billion light-years away, so today we can see it as it was 13.4 billion years ago. in case you're wondering, the story as it goes is that the furthest matter we see (the cosmic microwave background or cmb for short) was 42 million light years away from us 380 000 years after the big bang, back when it emitted the light we are detecting now, and this matter is now 46 billion light years away (which we call the radius of our Ethan Siegel, Forbes January 27, 2020. It takes 1,079,252,849 kilometers per hour to drive light.An Earth year of 364 years occurs here on Earth.Distances between these locations are 6 million 99,000 miles long (8 days, 86 hours).The distance between Us and China is approximately 5 trillion km.Known as the "one light year," this distance represents the distance between two points. There are 24 hours a day and 365.25 days per year, so this time in years is 137 thousand years. Why is this? If you do the math, you get an incredible answer: 46 billion light-years. The universe is about 13.8 billion years old, so any light we see has to have been travelling for 13.8 billion years or less - we call this the 'observable universe'. But that still sets a limit on the . A trip at light-speed to the very edge of our solar system - the farthest reaches of the Oort Cloud, a collection of dormant comets way, way out there - would take about 1.87 years. If our Universe had more dark energy and less matter, the answer would be slightly larger; if the Universe had more matter and less dark energy, the answer would be slightly smaller. The locations inside the sphere (shaded pale yellow) lie closer than 46 billion light years. We've looked 13.5 billion years into the past, supposedly only about 500 million years short of the big bang, at objects 46.5 billion light years away. There is no contradiction here. Space is a pretty good vacuum. A: The universe is indeed about 13.8 billion years old, based on measurements taken by the Planck mission in 2012. However I think the OP is asking how can we know about something that is so far away that it would take light 46 billion years to travel from it to us when the universe is only 13 billion years old.

The actual size of the observable universe is 46 billion light-years in any direction, even though the universe began only 13.8 billion years ago, Mack said. (Or 46.1 billion light-years if you want to be even more precise.) How is it possible for the universe to be almost 7 times larger than it is old? (Or 46.1 billion light-years if you want to be even more precise.) Earth is about eight light minutes from the Sun. That makes sense, however that is not what is happening. Astronomers have determined that the universe is nearly 14 billion years old and yet its. Earth formed only 4.5 billion years ago, so we can see quasars shining where the light had left before the Earth . That's in the septillions place. For very very distant objects, you need to account for the expansion of space. So, although the light itself . A trip at light-speed to the very edge of our solar system - the farthest reaches of the Oort Cloud, a collection of dormant comets way, way out there - would take about 1.87 years. What stops us so close from the finish line from peeking into the very beginning? The photons were emitted from a spherical shell which at the time was located at a proper distance of roughly 45 million light from us. If you do the math, you get an incredible answer: 46 billion light-years. We can see objects that are that are currently 46.1 billion light years away. . The observable universe is thus a sphere with a diameter of about 28.5 gigaparsecs (93 billion light-years or 8.8 10 26 m). How Can We See 46.1 Billion Light-Years Away? Those two statements are not identical. If you do the math, you get an incredible answer: 46 billion light-years.

Light always travels at the speed of light when in a vacuum. However, the distance to . A light year, abbreviated ly, is the distance light travels in one year: roughly 9.46 1012 kilometres (9.46 petametres, or about 5.88 1012 (nearly six trillion) miles). The comoving distance from Earth to the edge of the observable universe is about 46.5 billion light-years 14.26 (gigaparsecs or 4.4010 26 meters) in any direction. It is one of the first galaxies ever formed in the universe. If you could time travel back to when the CMB photons we now observe were emitted, the universe would be about 400,000 years old, unpleasantly warm, and a bit claustrophobic. It takes time for light emitted by one object to . We are seeing them as they were long ago, when they were no more than 13-point-something billion light years away. In 2016, NASA's Hubble Space Telescope looked at the farthest galaxy ever seen, called GN-z11. In BB cosmology, the 13.8 billion years age of the universe is the Hubble time based upon H0. When its said, "the universe is 45 billions light years in radiis" what that actuall means is that the gas at the edge of our furthest view is calculated to now be around 27 billion light years away. (Advanced) >" onclick="window.open(this.href,'win2','status=no,toolbar=no,scrollbars=yes,titlebar=no,menubar=no,resizable=yes,width=640,height=480,directories=no,location=no'); return . Assuming that space is roughly flat (in the sense of being a Euclidean space), this size corresponds to a . If our Universe had more dark energy and less matter,. In actuality, we can see for 46 billion light years in all directions, for a total diameter of 92 billion light years. The limit of the visible Universe is 46.1 billion light-years, as that's the limit of how far away an object that emitted light that would just be reaching us today would be after expanding away . The locations outside the sphere (shaded green) lie further away than 46 billion light years. If our Universe had more dark energy and less matter,. The observable universe is roughly 46 billion light-years in diameter or 92 billion light-years across, however, the entire universe might be infinitely larger. That is only 400 million years after the big bang. NASA / GSFC. As our technology over the years improved, astronomers were able to look deeper and deeper into the violent past of . In an hour, light can travel 671 million miles.

Light is fast, but the distances are vast. So if everything was moving at the speed of light and started 13 billions years ago then the width of the universe should be 26 billion light years across. Yes, for stars in our galaxy, if a star is 736 light years away, the light took 736 years to reach here. Earth is about eight light minutes from the Sun. 46 billion years is distance of the furthest galaxies we can see in our reference frame in which the galaxy is moving very quickly away from us and so space and time are dilated. 7. Yes, those galaxies are now 46 billion light years light years away, but this is because the universe has expanded. That's too fast to comprehend. The most distant point in the observable universe is the CMB at just under 13.8 billion years ago [presently at a distance of 46.6 billion light years]. There are three intuitive ways we can choose to think about this. If there's one thing we've experimentally determined to be a constant in the Universe, it's the speed of light in a vacuum, c. No matter where, when, or in which direction light travels, it moves at 299,792,458 meters-per-second, traveling a distance of 1 light-year (about 9 trillion km) every year. If our Universe had more dark energy and less matter, the answer would be slightly larger; if the Universe had more matter and less dark energy, the answer would be slightly smaller. It is reasonable, therefore, to assume that our universe is at least billions of years oldold enough to give the light from these stars enough time to reach our planet billions of light-years away. 13 billion years ago, that star was much closer to us than 13 billion light years. So, multiply that by 1 billion. Read Full Article (Or 46.1 billion light-years if you want to be even more precise.) Light is fast, but the distances are vast. NOTE: The article itself is sound, but the headline is not strictly accurate. First of all, 46 billion light years is the radius of the observable universe, not the entire universe. If there's one thing we've experimentally determined to be a constant in the Universe, it's the speed of light in a vacuum, c. No matter where, when, or in which direction light travels, it moves at 299,792,458 meters-per-second, traveling a distance of 1 light-year (about 9 trillion km) every year. Q&D: 13.8 billion years is time as measured a reference frame equivalent to the average velocity of all matter in the universe. So if it's been travelling for 13.7 billion years, then it has travelled 13.7 billion light years. It's a massively high number. One light year is equivalent to 5.88 trillion miles (9.46 trillion kilometres). Measuring something 27 billion light-years away from Earth remember that a . Q&D: 13.8 billion years is time as measured a reference frame equivalent to the average velocity of all matter in the universe. If you do the math, you get an incredible answer: 46 billion light-years. The light might have been travelling for 10 billion years, but in that time space has expanded and so the distance that you would find if you froze time and . It is solely for the purpose of demonstrating the fallacy of creationists who believe the universe has only existed 6,000 years. What were the limiting factors? The comoving distance from Earth to the edge of the observable universe is about 14.26 gigaparsecs (46.5 billion light-years or 4.40 10 26 m) in any direction. 46 billion years is distance of the furthest galaxies we can see in our reference frame in which the galaxy is moving very quickly away from us and so space and time are dilated. In an hour, light can travel 671 million miles. More specifically, a light year is defined as the distance that a photon would travel, in free space and infinitely far away from any gravitational or magnetic fields, in . At 46.5 billion light years per 15 minutes, that's 186 billion light years per hour. Read Full Article First off one is a measure distance (47 billion light-years) and the other age (13 billion years). For it to be this large, wouldn't it require information to travel an average of 7 times the speed of light? At 186k mi/sec speed of light X the estimated 15 billion year age of the Universe (rounding up from the CMB estimate of 13.7 billion years), we might have a Universe around 68 sextillion miles wide. The Hubble deep field contains some of the furthest galaxies from Earth, some of which are over 12 billion light years away, NASA. The universe is 13.7 billion years old. There's no way for something to get 13.4 billion light years away from us in 400,000 years so somehow the universe got big at the start. So, this trip would take 1.2 billion hours. This reasonable assumption contradicts the Young Earth (YE) perspective, which claims that the universe is less than 10,000 years old. The same principle applies to the observable and the entire universe. But, during the 13.8 billion light years they have been travelling, the expansion of Universe means that the region of space they were emitted from now lies at a proper distance of roughly 46 billion light . That gives you an answer of 1,093,424,319,412,151,037,938,439 miles. The observable universe is 93 billion light years across (46 billion light years from Earth to edge). Now, 186 light years equals 1,093,424,319,412,151 miles. The answer seems obvious: 13.8 billion light-years, since a light-year is the distance light can travel in a year, and nothing can go faster than that. (Or 46.1 billion light-years if you want to be even more precise.) From this, we can extract one unique value for the size of the visible Universe: 46.1 billion light-years in all directions. There are 6 trillion miles in a light-year (approximately), so the distance we need to go is 6 trillion miles / light-year times 4 light-years, or 24 trillion miles. That first 1? So, lets track a photon that left one of the first stars at the edge of the current observable universe some 13 billion years ago. The Hubble time has a universe at least some 46 billion light years in radius, as seen from Earth. The size of our visible Universe (yellow), along with the amount we can. If there's one thing we've experimentally determined to be a constant in the Universe, it's the speed of light in a vacuum, c. No matter where, when, or in which direction light travels, it moves at 299,792,458 meters-per-second, traveling a . Although light is the fastest thing in the universe, its speed is still finite. The size and age of the universe seem to not agree with one another. The CMB photons from these regions will have taken less than 13.8 billion years to reach us and will have arrived in the past. Just for reference, if you wanted to travel 13 billion light years . The closest is 2.5 billion light years away, but there are many much further out. 3 Share ReportSave level 2 Original Poster1 year ago

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