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View Diary: New Curiosity Images Bring Home That Mars is a Real Place, We'll Be Seeing Soon With Our Own Eyes (283 comments)

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  •  Useless to guess at probabilities (2+ / 0-)
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    Troubadour, Dumbo

    in the absence of data. That is the whole point of looking at Mars for life, looking for terrestrial exoplanets etc.

    An RNA world wouldn't start with transcription, anyway, but with replicators and ribozymes that enhance replication. And since ribose isn't the most chemically stable sugar, initially it might have been some other kind of nucleic acid chain.

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