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Re:Planet Ceres is an 'ocean world' with sea water beneath s... by philipswood on Monday August 10, 2020 @11:43PM (#24116976)
Essay by Isaac Asimov considering viable chemistries for life: "Not as we know it. The chemistry of life"

http://www.bigear.org/CSMO/HTML/CS09/cs09p05.htm

I was surprised to realise (that besides being N author) that he was a professor of biochemistry.

Re:Planet Ceres is an 'ocean world' with sea water beneath s... by philipswood on Tuesday August 11, 2020 @07:38AM (#24119271)
He ends up with a "list of life chemistries, spanning the temperature range from near red heat down to near absolute zero:

1. fluorosilicone in fluorosilicone 2. fluorocarbon in sulfur 3.*nucleic acid/protein (O) in water 4. nucleic acid/protein (N) in ammonia 5. lipid in methane 6. lipid in hydrogen Of this half dozen, the third only is life-as-we-know-it. Lest you miss it, I've marked it with an asterisk."