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The age of the Earth is around 4.54 billion years.
This age has been determined by radiometric age dating of meteorite material and is consistent with the ages of the oldest-known terrestrial and lunar samples. The Sun, in comparison, is about 4.57 billion years old, about 30 million years older.
Following the scientific revolution and the development of radiometric age dating, measurements of lead in uranium-rich minerals showed that some were in excess of a billion years old. The oldest such minerals analyzed to date - small crystals of zircon from the Jack Hills of Western Australia - are at least 4.404 billion years old. Comparing the mass and luminosity of the Sun to the multitudes of other stars, it appears that the solar system cannot be much older than those rocks. Ca-Al-rich inclusions (inclusions rich in calcium and aluminium) - the oldest known solid constituents within meteorites that are formed within the solar system - are 4.567 billion years old, giving an age for the solar system and an upper limit for the age of Earth. It is hypothesised that the accretion of Earth began soon after the formation of the Ca-Al-rich inclusions and the meteorites. Because the exact accretion time of Earth is not yet known, and the predictions from different accretion models range from a few millions up to about 100 million years, the exact age of Earth is difficult to determine. It is also difficult to determine the exact age of the oldest rocks on Earth, exposed at the surface, as they are aggregates of minerals of possibly different ages.
What else can I help you with?
. Approximately how old is the Earth?
4.Approximately how old is the Earth?
Approximately how old is the Earth?
4.Approximately how old is the Earth?
The Earth is 4.55 billion years old how many millennia old is the earth?
Earth is approx. 4,550,000 millennia old. 1 millennium = 1000 years.
How old is the earths atmosphere?
The earth's atmosphere is very old. It was formed when earth was formed.
How old will you be if you are 10 on earth how old will you be on mars?
Since a year on Mars is approximately 1.88 Earth years, if you are 10 years old on Earth, you would be around 5.3 years old on Mars.
. Approximately how old is the Earth?
4.Approximately how old is the Earth?
How old do scientist the the earth is?
How old do scientists calculate the Earth
Approximately how old is the Earth?
4.Approximately how old is the Earth?
How old is the earth if it was formed in4004bc?
the earth is 874 years old.
How old is the planet Earth?
earth is about 4 billion years old
The Earth is 4.55 billion years old how many millennia old is the earth?
Earth is approx. 4,550,000 millennia old. 1 millennium = 1000 years.
How old it the Earth?
In science class I learned that earth is approximately 4.6 billion years old.
How old is plant earth?
Planet Earth is 4.567 billion years old.
What type of resources are as old as Earth itself?
you can be an old earth but it won't work
How old is earth in 2011?
Earth is approximately 4.6 billion years old.
How old earth will be in 2013?
Earth is about 4.5 to 4.6 billion years old.
Is someone is 12 earth year old how old are they in earth days?
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