Well, No1, if you aren't a Bible believer, then any explanation, that I give, will not suffice. But here's one anyway.
"And the earth was without form & void".... Meaning that it could have hung is space for billions of years; until it was ready to be used. I think that's why they find evidence dating that far back. But from the beginning of Genesis to current day, the earth has been in existence about 6,000 years.
As far as life as we know it? I'm sure there is life on other planets, other galaxies, other solar systems. But we will never be able to have contact with them. We doomed this planet when we allowed sin to enter. Christ died to redeem those who choose to be. There is no way He can allow us to contaminate any other planet or life form. Search all you want. It won't happen.