Cells divide and make new cells, is all life on Earth rooted in one super ancestor cell? Or are there parallel paths to cell creation?
Cells divide and make new cells, is all life on Earth rooted in one super ancestor cell? Or are there parallel paths to cell creation?
It’s safe to assume that it has happened successfully at least once.
The universe is vast and the cosmos even moreso, and while we may indeed be the only form of life in this universe that can wonder about and traverse space, we know with 100% certainty that this universe has the characteristics to produce life.
We cannot be certain or safely assume that it’s only happened once. The amount of space we’ve explored even with our telescopes is about the same amount as a cup of ocean water versus the ocean.
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Ah, gotcha. You were being very specific about Earth. My bad.