[Joe Hadenuf]

What is the current age estimate of Earth. 3 or 4 billions years keeps coming to mind. Is this close or are there updated figures?

[RadioAstronomer]

What is the current age estimate of Earth. 3 or 4 billions years keeps coming to mind. Is this close or are there updated figures?

The generally accepted age for the Earth and the rest of the solar sytem is about 4.55 billion years (plus or minus about 1%).