The age of the earth is approximately one-third of the age of the universe.An immense amount of biological and geological changes has occur in that time span.earth was formed around 4.54 billion years ago by ace ration from solar nebula.solar nebula means our solar system began forming within a concentration of interstellar dust and hydrogen gas called molecular cloud.due to its gravity the cloud is contracted and formation of pro to-sun in hot dense centre.The remainder of the cloud formed a swirling disk called the solar nebula.This age is based on evidence from radiometric age dating of meteorite material and is consistence with the ages of the oldest knoen terrestrial and lunar samples.
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