that would be depend on your theology. Some say that the Earth is roughly 6,000 years old. But thanks to carbon dating, bugs have been proven to be older than that, so I do not think that holds any water. I would say your best bet would be to do some research and come to your own opinion.
As far as its birthday, again, it would depend on your religious beliefs. if you are going with the 6,000 years old ploy, and thus a planet created by "God", you would have a birthday for the Earth. A birthday in the sense that one day no Earth and the next day Earth. But if you do not believe that, than there can be no black and white birthday in the sense of a human. Planets grow by accretion, usually starting out as an asteroid or stellar body. There are theories that the universe was created in the Big Bang, but again, some of your own research will have to be done in order to reach an opinion you are comfortable with.
Good old Astronomy Class and too many years in High School
· 1 decade ago