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Where is there evidence that the universe is more than 10 billion years old?
Wiki User
∙ 15y ago
Rates of radiometric decay, also by looking at the most distant detectable objects (galaxies about 14 billion light-years away).
1 light-year = the distance light travels in one year. If an object is 14 billion light-years away the universe must be at least 14 billion years old for the light to get to earth.
Oh, also by estimating the amount of hydrogen that has been converted by stars into other heavier elements, etc.
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By rolling back the universe to the point where the universe was a singularity using the known rate of cosmic expansion.
Wiki User
∙ 7y ago
Wiki User
∙ 13y agoWiki User
∙ 15y agoOne of the strongest arguments for the age of the universe exceeding the 10 billion year figure is an extension of Hubble's law. And what a picture of the universe it paints! Edwin Hubble and and his extraordinary assistant, Milton Humason, made observation after observation up on Mt. Wilson. They discovered that things looked a bit "odd" out there, and that "colors" were off We know the universe is expanding. We look far out (and, simultaneously, back in time) and see things moving (rushing, actually) away from us. The farther out we look, the faster the things are rushing away from us. We don't want to be so vain as to believe we are in the "middle" of the universe, but when we look out in all directions, we get the "feeling" we're in the middle 'cause of what we see. Anyway, with the universe expanding all around us, we took the film of that pictue (the universe expanding) and ran it backwards. What do you think we see? By running the film backwards, we see the universe "coming back together again" like it was before it started flying apart. Make sense? Sure it does. At some point (the starting point), all the "stuff" in the universe was pretty much in the same place at the same time. Things were super smooshed together, and then there was this big bang (the Big Bang - yes, the theory). Everything moves out. So by looking at the condition of the universe now and projecting back, we can easily get an age of over 10,000,000 years (ten billion years).
Wiki User
∙ 15y agobecause the galaxies are expanding out so by the rate of the expantion they are estimating how old the universe is. theory is that there was abig bang and from then the galaxies have been expanding. they know this because the universe is said to be stretching.
Wiki User
∙ 11y agoThe age of the Universe is basically obtained by extrapolating its expansion into the past. In other words, galaxies (the largest observable objects) move away from one another in such a way that so-and-so many years ago they must have been very close together.
Wiki User
∙ 14y agoFor example, observe the speed at which galaxies move away from each other, and extrapolate to the past. This will give a fairly good approximation of the age of the Universe, provided the distances and speeds are measured with some degree of accuracy.
Wiki User
∙ 11y agoThrough the radiometric age dating of rocks that have come from places in the solar system off of Earth. Scientists analyze the material in meteorites. They find out how many parent and daughter atoms are in the material. Once they know that ratio they compare it to the known decay rate of the material. With this knowledge they can find out the age of the material. The oldest material ever analyzed was approximately 4.56 billion years old.
Wiki User
∙ 13y agoNobody knows the size of the universe. All we know is the distance to the farthest object
that has been observed ... about 13 billion light years. But we don't see any 'end' to the
universe at that distance, so we don't know how much farther it keeps going beyond that
distance.
Anonymous
They use powerful telescopes to see back in time to estimate how old the universe is( according to scientist Albert Einstein).
-Anonymous Answerer
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How big do astronomers estimate the universe to be?
There is no end. They Universe is always expanding due to the big bang. ----------------------------------------------------------------------------------------- No, the Universe actually closes in on itself. If you left from here in any direction, and you went far enough and fast enough, you would arrive right back here. In any case, the Universe does not have any boundaries.
What is the furtherest distance scientists have been able to see into the universe?
The answer is quite more complicated than it seems. The farthest astronomers have seen in the visual spectrum is the Hubble Ultra Deep Field. This picture looks back in time about 13 billion years, and the galaxies it has captured wereprobably no more than 800 million years old. But it is a common misconception that since light travels at a set speed, a picture looking back 13 billion light years must be a picture of something 13 billion light years away. This isn't the case. Since the universe is constantly expanding, the galaxies depicted in the HUDF picture are no longer 13 billion light years away. In reality, the universe is now about 90-140 billion light years across. It comes off as a paradox because the universe technically expanded faster than the speed of light (how else could light from galaxies now 90 billion light years away reach us in 13 billion years?) It's a strange consequence of general and special relativity. Put simply, the light from the farthest objects scientists can see originated 13 billion light years ago, but these objects are not that far away in real time.
How old is the universe according to the big bang theory?
The Big Bang theory doesn't actually say all that much about how old the Earth is. Obviously, if the Universe is 13 billion years old, the Earth can't be any older than that. Less obviously, the Big Bang produced mostly hydrogen and virtually no metals ("metal" is astronomical code for "anything heavier than helium"). Heavy elements were produced later, in stars, and released by supernova explosions. Since the Earth is made mainly of elements heavier than helium, it has to have formed after there was time for stars to form, age, and go supernova, and for the gas and dust produced to coalesce into the solar system. However, this only provides a maximum age, not a minimum; as far as the Big Bang theory is concerned the Earth could have formed last Tuesday. The generally accepted age for the Earth (4-5 billion years) is based on other factors, such as radioisotope ratios in rock.The big bang theory has nothing to do with the age of the earth. Scientists think the earth is 4.4 billion years old. That is the age of the solar system. That is the age of some meteorites that have fallen to earth. Their age is determined by the ratio of uranium to lead. Uranium is radioactive and over the years becomes a special form of lead.The big bang theory had to do with the age of the universe. Scientists determined the age of the oldest light in the universe and put some formulas into their equations to figure out how long ago it was created. They assumed it was created by the big bang. If their equations are correct, they know the age of the universe.
How far does the galaxy travel in one year?
The radius of the observable universe is about 15 billion light years. That's 90 billion trillion miles or 1.35e+ 26 meters or 5.3149606299e+27 inches or 4.492133858e+26 feet or 4.4763779528e+26 yards or 1.25 e +28 centameters or 1.25 e + 29 mm. or 1.35 e + 32 micro meters or 1.35 e+35 nano meters or 1.35 e+38 picto meters or 1.3472083149 e+ 39 x unit or 1.35 e+ 50 yoctometer or 1.25 e+ 47 zepto meters. Comments: That's not the usual answer, given by astronomers. They usually say "about 45 billion light years". The AGE of the Universe is about 15 billion years, or more precisely about 13.7 billion years. So, light reaching us cannot have travelled more than about 13.7 billion light years. However, the Universe has been expanding. Something that emitted light 13.7 billion years ago could NOW be as far away as about 45 billion light years.
Explain why objects that are farther away look younger to us than if they were closer to us?
light from any source takes time to reach us, it merely travels so fast that we percieve it as being instant because we tend to be very close to the sources of light we manipulate. when we see light from a galaxy 1000 light years away, we are seeing light that was emitted by that galaxy 1000 years ago, and if this galaxy suddenly disappeared, we wouldn't know about it for 1000 years, until the last of its light arrived and then no more. if you consider this in cosmic terms, were we to study a region of the universe 1 billion light years away, we would be looking at something 1 billion years old, a snapshot of what the universe looked like a billion years ago, a younger universe. probably helps to explain what younger means here: in space the universe is basically the same everywhere, stars in galaxies in clusters, but in time the composition has changed as chemical and nuclear reactions have altered the various quantities of different substances. so we see a galaxy a billion light years away, its composition will be of an earlier order than the composition of a nearer galaxy. As the universe expands galaxies move farther apart, the light more faint.
When was the universe and solar system formed?
Universe: About 13.8 billion years ago.Solar System: About 4.6 billion years ago. More details at the Wikipedia articles "Age of the Universe" and "Age of the Earth". The details include a discussion about the evidence.
How old do scientists think the universe?
They estimate the age of the Universe in more than 12 billion years.
What is the age of an irregular galaxy?
About 13 billion years old. The Universe itself is approximately 13.75 billion years old. All galaxies are about the same age and Irregular Galaxies were more common when the universe was younger.
What has existed for at least 3 million years?
The universe has existed for more than 14 billion years, the sun for more than 4 billion years - both well over 3 million years.
How old is the Earth based on scientific evidence?
Most scientists agree that the Earth and our entire solar system is about 4.5 billion years old. To the extent that there are disagreements as to the age of the Earth, the disagreements are in the decimal places. Some argue for 4.5 billion; some claim 4.6 or 4.7 billion years is more likely.
According to the modern scientific view how old is the Universe?
The scientific consensus has the age of the universe at between 13.6 to 13.8 billion years. Use the link below to read more.
What is the size and scale of your solar system galaxy and universe?
the size of the universe is still unknown so no one can answer that question for the next 5 billion years or more.
How can the universe be only some 14 billion years old when it can be contemplated that it could be 20 or 30 or more billions of years old?
The universe is actually about 15 billion years old. I'm not sure where you got the statistic that the Hubble Space Telescope can see 20 billion light years into space; I think you're off by a factor of three or so.
Seeing that the known universe has a radius of 47 billion light years and it is understood to be approximately 15 billion years old how did it inflate faster than the speed of light?
The Universe is expanding faster than the speed of light. Each object is restricted to moving, at most, at the speed of light, within its own local space. According to the General Theory of Relativity, there need not be any such restriction to the Universe on larger scales. For more detail, check the Wikipedia article on "Metric expansion of the Universe", and related links. Answer2: It did not inflate faster than the speed of light. The minimum size of the universe is about 16 billion light years before the "Big bang". The expansion is exponential range of three 47 billion light years and exponent Ht = 1.0986. . The Hubble Constant is 2E-18, thus t = 1.0986/2E-18=17.41 Billion years. The Universe is around 17.5 billion Years, not 15 billion years old. -------------------------- Now the age of the Universe is considered (13,798 +/- 0,037).109 years.
Are there more than a billion galaxies?
There are approximately 100 billion galaxies in the known Universe.
Are there at least 90 billion trillion planets in the observable universe?
Yes. There are at least 90 billion trillion or more planets in the observable universe.
Are there at least 350 billion or more large galaxies in the observable universe?
Yes, because scientists have found hundreds and hundreds of galaxies already and scientists say that there are more galaxies out there that they haven't found!
