Midnight In The Desert — importance

Evaluating Our Importance In The Universe

Posted by K R on

Evaluating Our Importance In The Universe

We know life was present on Earth at least 3.5 billion years ago. It may have been present even earlier, but results remain controversial. The window of opportunity for life to emerge and take root here opened after the Late Heavy Bombardment calmed down some 3.9 billion years ago. Before then, conditions were too harsh for living creatures to survive; if anything lived, it was most probably destroyed, leaving no clues. Life's early history is written in rocks. As primal rocks melted and got mixed and remixed in a churning inferno, life's early experiments were erased into oblivion. We can't...

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