In physical cosmology , the age of the universe is the time elapsed since the Big Bang. The current measurement of the age of the universe is around The uncertainty has been narrowed down to 20 million years, based on a number of studies which all gave extremely similar figures for the age. These include studies of the microwave background radiation by the Planck spacecraft , the Wilkinson Microwave Anisotropy Probe and other space probes. Measurements of the cosmic background radiation give the cooling time of the universe since the Big Bang,  and measurements of the expansion rate of the universe can be used to calculate its approximate age by extrapolating backwards in time. The Lambda-CDM concordance model describes the evolution of the universe from a very uniform, hot, dense primordial state to its present state over a span of about This model is well understood theoretically and strongly supported by recent high-precision astronomical observations such as WMAP. In contrast, theories of the origin of the primordial state remain very speculative. If one extrapolates the Lambda-CDM model backward from the earliest well-understood state, it quickly within a small fraction of a second reaches a singularity. This is known as the ” initial singularity ” or the ” Big Bang singularity”.
How Old is the Universe?
There are at least 3 ways that the age of the Universe can be estimated. I will describe The age of the chemical elements. The age of the oldest star clusters. The age of the oldest white dwarf stars.
There are other ways to date things (e.g. paintings) based on different lines of evidence. The age and “What is the basic building block of the universe?” is the.
The Institute for Creation Research ICR has recently completed their multi-year project dealing with a scientific evaluation of the age of the earth and produced two book publications and an accompanying DVD. Within their research, the ICR research team makes many claims that geological evidence, including their findings dealing with dating rocks using the fission track dating method, provides substantial evidence for a young earth. In order to evaluate ICR’s findings, one must first establish a proper methodology for fission track dating and compare ICR’s methodology and finding to previous results.
Fission tracks, as physical structures, are simply linear tracks in rock crystals usually about meters long. Fission tracks are most often caused by the spontaneous fission of the parent Uranium atom into two daughter atoms of palladium Fission track dating is somewhat of an anomaly in the field of radiometric dating. All other radiometric dating techniques rely on the relative abundances of a known parent isotope of an element and its corresponding concentration of daughter decay products. Fission track dating, on the other hand, does not involve the measurement of daughter products, and the concentration of its parent isotope can be misleading because the parent element goes through other types of decay much more often than it goes through spontaneous fission.
Unlike any other dating methods, however, fission tracks leave physical evidence of a radioactive process.
Carbon 14 dating 1
By: Maria Temming July 18, 1. You can unsubscribe anytime. The age of the universe is approximately This age is calculated by measuring the distances and radial velocities of other galaxies, most of which are flying away from our own at speeds proportional to their distances.
the age of the Universe and for the date of stabilization of its general structure the ages of the Earth and the Universe according to various dating methods.
Over the past century, astronomers have deduced several ways to estimate the age of the universe. To find the Hubble constant, astronomers observe distant galaxies and measure their distances by using Cepheid variable stars or other objects of known intrinsic brightness as well as how fast they recede from Earth. But there was a problem.
So astronomers of different mindsets got different values for the constant. A megaparsec equals 3. Therefore, the two groups estimated a range for the age of the universe of about 10 to 16 billion years. Higher values of the Hubble constant produce younger age values for the universe.
How Old is the Solar System?
This document is copyright and Matthew S. NOTE: This website has not been updated since early in this decade. I do not have the time or inclination to maintain it, but I have decided to keep it available as a product of its time. So please read with discernment and check sources.
Similar dating methods can be used for geologic time spans by picking isotopes with longer half-lives. Potassium decays with a half-life of billion years to.
As determined by the most recent geological and physical measurements, the Earth is 4. Here are some references that explain the independent scientific methods used to measure this age. Patterson, G. Tilton and M. New Series, Vol. The age of the Earth is a purely scientific issue. It is not a religious, legal, or philosophical issue. While questions like, “How many people should I be allowed to marry? It is not a moral question. It is a question of the natural world.
Some folks, like Terry Mortenson from Answers In Genesis see below, under claimaints , believe scientists cannot address the age of the Earth because no one was there to see it. Not only is this ludicrous, it’s an argument based entirely on the Argument from Ignorance fallacy. Mortenson is demanding eyewitness testimony.
Study: Universe Might Be 1.2 Billion Years Younger
The series, titled “Radiocarbon Universe,” will occur every Tuesday from 11 a. It is scheduled for 11 a. Tuesday, April The webinars are free and open to the public. All webinars will be recorded and available for future viewing. The purpose of the webinar series is to share the diverse topics and applications related to radiocarbon dating.
Modern Ways of Dating the Universe. Martha P. Haynes. Goldwin Smith Professor of. Astronomy. Cornell University. CAU Study Tour. June
Until recently, astronomers estimated that the Big Bang occurred between 12 and 14 billion years ago. To put this in perspective, the Solar System is thought to be 4. Astronomers estimate the age of the universe in two ways: 1 by looking for the oldest stars; and 2 by measuring the rate of expansion of the universe and extrapolating back to the Big Bang; just as crime detectives can trace the origin of a bullet from the holes in a wall. Astronomers can place a lower limit to the age of the universe by studying globular clusters.
Globular clusters are a dense collection of roughly a million stars. Stellar densities near the center of the globular cluster are enormous.
How Old Is Earth?
The age of Earth is estimated to be 4. Following the development of radiometric age-dating in the early 20th century, measurements of lead in uranium-rich minerals showed that some were in excess of a billion years old. It is hypothesised that the accretion of Earth began soon after the formation of the calcium-aluminium-rich inclusions and the meteorites.
Because the time this accretion process took is not yet known, and predictions from different accretion models range from a few million up to about million years, the difference between the age of Earth and of the oldest rocks is difficult to determine.
Basically the problem has its roots in a misconception of the scientific method or, dating are (admittedly by the scientists themselves) the weakest of the weak.
Planet Earth doesn’t have a birth certificate to record its formation, which means scientists spent hundreds of years struggling to determine the age of the planet. So, just how old is Earth? By dating the rocks in Earth’s ever-changing crust, as well as the rocks in Earth’s neighbors, such as the moon and visiting meteorites, scientists have calculated that Earth is 4.
Related: How Big is Earth? Scientists have made several attempts to date the planet over the past years. They’ve attempted to predict the age based on changing sea levels, the time it took for Earth or the sun to cool to present temperatures, and the salinity of the ocean. As the dating technology progressed, these methods proved unreliable; for instance, the rise and fall of the ocean was shown to be an ever-changing process rather than a gradually declining one.
And in another effort to calculate the age of the planet, scientists turned to the rocks that cover its surface. Scientists also must battle an issue called the Great Unconformity, which is where sedimentary layers of rock appear to be missing at the Grand Canyon, for example, there’s 1. There are multiple explanations for this uncomformity; in early , one study suggested that a global ice age caused glaciers to grind into the rock , causing it to disintegrate. Plate tectonics then threw the crushed rock back into the interior of the Earth, removing the old evidence and turning it into new rock.
In the early 20th century, scientists refined the process of radiometric dating. Earlier research had shown that isotopes of some radioactive elements decay into other elements at a predictable rate.