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The History of Earth - How Our Planet Formed - Full Documentary HD

Many independent measurements have established that the Earth and the universe are billions of years old. Geologists have found annual layers in ice that are easily counted to multiple tens of thousands of years, and when combined with radio isotope dating, we find hundreds of thousands of years of ice layers. Using the known rate of change in radio-active elements radiometric dating , some Earth rocks have been shown to be billions of years old, while the oldest solar system rocks are dated at 4. Astronomers use the distance to galaxies and the speed of light to calculate that the light has been traveling for billions of years. The expansion of the universe gives an age for the universe as a whole: Astronomers and geologists have determined that the universe and Earth are billions of years old.

Some meteorites are furthermore considered to represent the primitive material from which the accreting solar disk was formed.

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Nevertheless, ancient Archaean lead ores of galena have been used to date the formation of Earth as these represent the earliest formed lead-only minerals on the planet and record the earliest homogeneous lead-lead isotope systems on the planet. These have returned age dates of 4. Statistics for several meteorites that have undergone isochron dating are as follows: [36].

you are at least 18 years of age, Dating The Age Of The Universe Wiki that you are not considered a minor in any jurisdiction where you live, from which you access this Dating The Age Of The Universe / One in living. Types of dating, was gleaned from radioactive dating is older or event is radiocarbon dating back by the billion. Following the age of cosmic time of matter in b. So, scientists know the universe, by the nuclear age of dating, at Earth, like so many fading stars, and that was anybody's guess. Hubble constant. Dec 27,  · Thus to use this age to determine the age of the Universe, a model of when the elements were made is needed. If all the elements were made in a burst soon after the Big Bang, then the age of the Universe would be t o = billion years.

The Canyon Diablo meteorite was used because it is both large and representative of a particularly rare type of meteorite that contains sulfide minerals particularly troiliteFeSmetallic nickel - iron alloys, plus silicate minerals.

This is important because the presence of the three mineral phases allows investigation of isotopic dates using samples that provide a great separation in concentrations between parent and daughter nuclides.

This is particularly true of uranium and lead. Lead is strongly chalcophilic and is found in the sulfide at a much greater concentration than in the silicate, versus uranium.

Because of this segregation in the parent and daughter nuclides during the formation of the meteorite, this allowed a much more precise date of the formation of the solar disk and hence the planets than ever before. The age determined from the Canyon Diablo meteorite has been confirmed by hundreds of other age determinations, from both terrestrial samples and other meteorites.

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This is interpreted as the duration of formation of the solar nebula and its collapse into the solar disk to form the Sun and the planets. This 50 million year time span allows for accretion of the planets from the original solar dust and meteorites. The Moon, as another extraterrestrial body that has not undergone plate tectonics and that has no atmosphere, provides quite precise age dates from the samples returned from the Apollo missions. Rocks returned from the Moon have been dated at a maximum of 4.

Martian meteorites that have landed upon Earth have also been dated to around 4.

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Lunar samples, since they have not been disturbed by weathering, plate tectonics or material moved by organisms, can also provide dating by direct electron microscope examination of cosmic ray tracks. The accumulation of dislocations generated by high energy cosmic ray particle impacts provides another confirmation of the isotopic dates. Cosmic ray dating is only useful on material that has not been melted, since melting erases the crystalline structure of the material, and wipes away the tracks left by the particles.

Altogether, the concordance of age dates of both the earliest terrestrial lead reservoirs and all other reservoirs within the Solar System found to date are used to support the fact that Earth and the rest of the Solar System formed at around 4.

Age of the universe

From Wikipedia, the free encyclopedia. See also: History of Earth. Scientific dating of the age of the Earth. Life timeline. This box: view talk edit.

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Single-celled life. Multicellular life. Earliest water. Earliest life.

Dating the age of the universe

Earliest oxygen. Atmospheric oxygen. Oxygen crisis. Sexual reproduction. Earliest plants. Earliest animals.

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Ediacara biota. Cambrian explosion. Earliest apes. See also: Human timelineand Nature timeline. Main article: History of geology. Further information: Relative dating.

Main article: Radiometric dating. Further information: Canyon Diablo meteorite.

Further information: Age of the Solar System. Astronomy portal Earth sciences portal. Geological Survey. Archived from the original on 23 December Retrieved Brent Special Publications, Geological Society of London.

Earth and Planetary Science Letters. Scientific American. Archived from the original on The Age of Everything. University of Chicago Press. Part II. The disintegration products of uranium".

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American Journal of Science. Chemical Abstracts. The Outcrop, Geology Alumni Newsletter. University of Wisconsin-Madison. Archived from the original on Australian Journal of Earth Sciences. Bibcode : AuJES. Bibcode : Sci Bibcode : Natur. New York: D. Appleton and company. Uncovering the Past.

Oxford University Press US. Principles of Stratigraphy.

Dating the age of the universe - Join the leader in online dating services and find a date today. Join and search! How to get a good man. It is not easy for women to find a good man, and to be honest it is not easy for a man to find a good woman. Want to meet eligible single woman who share your zest for life? Indeed, for those who've tried and failed to find the right man offline, relations. Oct 30,  · How Do We Know the Age of the Universe? June 13, To the Christian, God’s word is the ultimate, unchanging authority, and so we can rely upon it for answers for many things, such as the age of the universe. It goes like this: If the age of the universe is truly about billion years old as scientists have ascertained and if God truly created the universe in 6 days, as inspirers of the Bible have ascertained, then each Biblical day should be billion years ( x 10e9) / 6 = billion years long.

Blackwell Publishing. The Geological Society. At the very beginning, according to the Big Bang theory, the temperature and density of the Universe were infinite, and it was filled with tremendous energy. The Big Bang initiated expansion. This consisted of a decrease in density accompanied by cooling, both of which are continuing to this day. Within the first 10 seconds or so after the Big Bang, the principal subatomic particles were formed. Aboutyears later the temperature decreased to 10, K and the first simple atoms formed.

The subsequent history of the Universe involved continued cooling, continued expansion and a decrease in average density, and the condensation of dust and gas into galaxies, stars, and planets Dalrymple Creationist Hugh Ross accepts this conventional science and integrates it into the Biblical account.

He describes the Big Bang as "an immensely powerful yet carefully planned and controlled burst of creation" Ross From a source beyond the cosmos, time, space, matter, energy, and the physical laws that govern them came into existence in an instant. That source, according to Ross, is God. Ross' proof here is the "extreme fine-tuning not only in the laws and constants of physics but also in the gross features of the universe, such as its expansion rate, uniformity, total mass, and relative numbers and masses of different fundamental particles.

The possibility of life's existence and survival depends on the fine-tuning of all these features" Ross Moreover, Ross points out Biblical scripture that explicitly and repeatedly states two fundamental features of the Big Bang: a transcendent cosmic beginning in the finite past and continuous cosmic expansion Ross In one example, Ross cites Isaiah which refers to God as "He who created the heavens and stretched them out.

Unlike Ross, who accepts the science behind the Big Bang, Wise and the ICR scientists believe in a young-age creation model, where God created the universe in a complete, mature form, meaning the universe did not have to develop into its final form from an event like the Big Bang.

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Because the universe does not have to develop or evolve, fewer evidences have to be explained in the young-age creation model. It is, as Wise contends, a simpler hypothesis.

Age of the Earth from seasonal rings and layers

Wise believes that, in its simplicity, a young-age creationist model provides the only possible explanation that is in harmony with the Bible.

Wise goes further to discount the Big Bang. He notes that although the Big Bang is well evidenced, it cannot be true for the following reasons: According to scripture the universe is only 6, years old, God created the heavens and the earth during the literal creation week, and that the cosmic radiation is too uniform - more so than the distribution of matter in the universe Wise Wise does have a valid point with the radiation being too uniform, as this is one ct science has yet to fully explain.

The age of the Universe can also be estimated from a cosmological model based on the Hubble constant and the densities of matter and dark energy.

Scientific dating of the age of the Earth The Blue Marble, Earth as seen from Apollo 17 The age of the Earth is estimated to be ± billion years ( ? 10 9 years ± 1%). Ultimately, both the red shift and background radiation serve as well-established natural clocks for dating the age of the Universe between billion years. Regardless of how Creationists characterize the Big Bang theory and the expansion of the universe, there are no legitimate competing models that explain the size and character of the Universe. Conclusion. Layers in glaciers show a history much longer than 10, years, and radiometric dating places the formation of the Earth at billion years. Light from galaxies is reaching us billions of years after it left, and the expansion rate of the universe dates its age to billion years.

This model-based age is currently But this Web page will only deal with actual age measurements, not estimates from cosmological models. The actual age measurements are consistent with the model-based age which increases our confidence in the Big Bang model. The age of the chemical elements can be estimated using radioactive decay to determine how old a given mixture of atoms is. The most definite ages that can be determined this way are ages since the solidification of rock samples.

When a rock solidifies, the chemical elements often get separated into different crystalline grains in the rock.

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For example, sodium and calcium are both common elements, but their chemical behaviours are quite different, so one usually finds sodium and calcium in different grains in a differentiated rock. Rubidium and strontium are heavier elements that behave chemically much like sodium and calcium.

Thus rubidium and strontium are usually found in different grains in a rock. But Rb decays into Sr with a half-life of 47 billion years. And there is another isotope of strontium, Sr, which is not produced by any rubidium decay.

The isotope Sr is called radiogenicbecause it can be produced by radioactive decay, while Sr is non-radiogenic. The Sr is used to determine what fraction of the Sr was produced by radioactive decay. After the rock has been solid for several billion years, a fraction of the Rb will have decayed into Sr See the talk. When applied to rocks on the surface of the Earth, the oldest rocks are about 3.

When applied to meteorites, the oldest are 4. This very well determined age is the age of the Solar System.

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When applied to a mixed together and evolving system like the gas in the Milky Way, no great precision is possible.

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