- #1
BuddyPal
- 16
- 0
I guess it'd be hard to tell when the Earth became the earth, so I suppose a better question would be; 'How long ago was the Earth able to support life?' I've read that life has only had approximately 200 million years to get to where it is today because of the period of heavy bombardment which lasted for the first 400-600million years of our spinning rock's existence, but my anthropology professor pointed out that the first recorded fossilized microbial life is 3 billion years old. Naturally I'm puzzled, please help me gain clarity. (also, for curiosity's sake, I'm interested in how we date the earth)