The Age of The Earth

No one knows the exact age of the earth. No Living person was alive at the beginning of time when heaven and earth were created.
Different calculations have been made from six thousand plus years to four and half plus billion years. The truth is no one knows.
Scientists don't know. Historians don't know. Archaeologists and Geologists don't know. All they can do is make what they call "educated guesses". 
When was "The Beginning" ? 
The Holy Bible says that "In the beginning GOD created the heaven and the earth." #Genesis 1:1 The universe ( i.e. the sun, the moon, the planets including planet earth, the stars, the asteroids and meteors and the galaxies ... the universe was created way back in the beginning.
Time as we know it i.e. a twenty four hour day only began on the evening and the morning of the first day [ #Genesis 1:5 ] i.e. after heaven and earth were created way back in the beginning.
When we read #Genesis 1:2 we see that earth was in darkness and that the earth was void and that the earth was covered with water. See #Genesis 1:2 ....