OK...hypothetical thought puzzle.
Let's say in the next few years astronomers detect chlorophyll on Europa.
Would that finding support Science, Religion, both or neither? Discuss...
The search for life elsewhere in the universe starts with the search for water, without which the carbon based life existing on Earth cannot function. In a way the search for life on other worlds seems to have undergone considerable ‘mission creep’ from the assumption that for life to exist there needs to be water, to the reasoning that where water exists there is a reasonable chance of life developing.
But assuming abiogenesis of life on other worlds, it would be primitive life in the form of bacteria and archaea. Once it exists, life on earth is amazingly tenacious, able to survive in extreme conditions. But the conditions for abiogenesis would be far more specific, depending exactly, or nearly, on the same conditions that enabled it to happen on earth.
The big issue is how life could evolve from bacteria to the eukaryote life that enables progress towards higher life forms – which includes plant life – and eventually intelligent life –which includes animal life.
On Earth it happened because after 2 billion years of bacterial life, the extraordinary once in 4.5 billions years event occurred of a singular primary endosymbiosis where a bacteria absorbed an archaea which became an ‘organelle’ dependent on the bacterial host cell, eventually becoming the mitochondria that enabled the development of the eukaryote cell with its nucleus, which is the building block of higher life.
The event happened only once, after 2 billion years of bacterial life on Earth. It had never happened before and has never happened again, in spite of bacteria swarming in uncountable numbers for the 4.5 billion years of their existence.. All eukaryote cells trace back to that event.
The eukaryote cell is a marvellous thing, a universe within itself.
So it’s not so much the possibility of abiogenesis of bacterial life on other worlds (however unlikely that may be in reality) but the possibility that the same endosymbiosis between bacteria and archaea also happened, enabling the development of higher life.
Chlorophyll won't be detected on Europa, in dark waters beneath ice several miles thick. But if it was detected elsewhere in the universe the possibility of the same primary endosymbiosis having occurred there would be so unlikely that it would far more possible to have arrived there from earth -- or arrived on earth from there -- or arrived on both worlds from a comet from somewhere else? IMO
But it's just my own take, because I'm not really knowledgeable about the science ...