Relative Dating:
The dating of fossils was originally done by their placement in a geologic column of rock strata. Because of the Law of Superposition, the deeper the stratum, the older it is (in an undisturbed body of rock or sediment). Fossils which were evident in a particular stratum, but missing from other strata were noted as "index" fossils. The presence of these fossils indicated the age of the stratum relative to other layers. The layers of stratum were placed in a geologic column, subdivided, and assigned names based on the presence of different types of fossil organisms. The use of fossils in this manner is known as biostratigraphy and is the basis of "relative dating" of rock layers and fossils, a dating technique that was in effect until the advent of radiometric techniques in the twentieth century.
Absolute Dating:
Radiometric dating of rock involves the measurement of the amount of decay in radioactive elements which are present in the rock. Radioactive elements decay at unique rates, depending on the isotope. This rate of decay is known as half-lives, it is the time necessary for ½ of the atoms to decay in a particular element. The decay follows a geometric scale, in that in the first half-life of an element, ½ of the atoms decay, yet in the second half-life, ½ of those remaining decay and so forth. By measuring this decay, and knowing the half life of an element, scientists can date a sample. Radiometric dating is particularly useful in dating igneous and metamorphic rock.
They don't. Do some reading on the Solar System (for example, in Wikipedia); the current estimate for the age of the Solar System is between 4-5 billion years.They don't. Do some reading on the Solar System (for example, in Wikipedia); the current estimate for the age of the Solar System is between 4-5 billion years.They don't. Do some reading on the Solar System (for example, in Wikipedia); the current estimate for the age of the Solar System is between 4-5 billion years.They don't. Do some reading on the Solar System (for example, in Wikipedia); the current estimate for the age of the Solar System is between 4-5 billion years.
The Solar System is about 4.6 billion years old.
The redshift of the cosmic microwave background radiation
The age of the solar system is estimated to be about 4.6 x 10^9 years.
Comets are made up of remnants from the early solar system, so their age is generally around the same as our solar system, approximately 4.6 billion years old. While some comets may contain even older material from beyond our solar system, as a whole, comets are not older than our solar system.
They don't. Do some reading on the Solar System (for example, in Wikipedia); the current estimate for the age of the Solar System is between 4-5 billion years.They don't. Do some reading on the Solar System (for example, in Wikipedia); the current estimate for the age of the Solar System is between 4-5 billion years.They don't. Do some reading on the Solar System (for example, in Wikipedia); the current estimate for the age of the Solar System is between 4-5 billion years.They don't. Do some reading on the Solar System (for example, in Wikipedia); the current estimate for the age of the Solar System is between 4-5 billion years.
Age of our solar system (~4.6bya)
radioactive
The approximate age of the solar system based on the oldest rocks that have been analyzed is 4.56 billion years.
The Solar System is about 4.6 billion years old.
The Earth is part of the Solar System, so they are of the same age.
of course they can by carbon-14 dating.
One method is Carbon-14 Dating.
They tell us the age of the moon, which indicates when the Solar System itself was being formed.
That's the age of our Solar System, so you can expect all the planets in our Solar System to have approximately that age.
How the solar system made
That's the age of our Solar System, so you can expect all the planets in our Solar System to have approximately that age.