how old is world

The age of the Earth is currently estimated to be about 4.54 billion years, with a margin of error of around 50 million years. This estimate is based on radiometric dating techniques applied to meteorite material and the oldest terrestrial minerals, which consistently point to this age range. The Earth formed from the solar nebula as part of the early development of the Solar System, roughly 4.6 billion years ago, and has undergone significant geological and biological evolution since then.