All life on Earth can be traced back to a Last Universal Common Ancestor, or LUCA—and it likely lived on Earth only 400 million years after its formation.
Yes but, this was maybe 300 million years after Theia smashed the proto-earth half destroying the planet and forming the moon. The whole planet must have been sterilised by that right? So it’s pretty damn quick isn’t?
it’s ~twice the time between us and our last common ancestor with platypuses (160mya)
That’s a good point and it really puts deep time in perspective. But it still points the no life / life transition being extremely easy? Doesn’t it? In two to three hundred myas we had a jump from barren hell scape to single cell life. That makes if look like life must be pretty easy to get started or am I missing something? Not a biologist so I suspect I’m missing something.
Yes but, this was maybe 300 million years after Theia smashed the proto-earth half destroying the planet and forming the moon. The whole planet must have been sterilised by that right? So it’s pretty damn quick isn’t?
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it’s ~twice the time between us and our last common ancestor with platypuses (160mya) That’s a good point and it really puts deep time in perspective. But it still points the no life / life transition being extremely easy? Doesn’t it? In two to three hundred myas we had a jump from barren hell scape to single cell life. That makes if look like life must be pretty easy to get started or am I missing something? Not a biologist so I suspect I’m missing something.
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