DrPizza
Administrator Elite Member Goat Whisperer
IIRC, there was an article or a paper written about just such a hypothesis... - and that hypothesis seems pretty natural, given a couple of generations growing up with Star Trek to watch. (Star Trek is fiction, in case anyone isn't sure. And, it's not based on actual events - that was Dragnet)
However, the article went into detail about what constitutes life - that is, what traits would something have to share with other life-forms to be considered life... or what subset of traits would constitute life.
The conclusion of that article was that life most likely required either carbon or silicon. Either Oxygen or Sulfur. and most likely, hydrogen. (I can't remember if Nitrogen was required). This is due to the nature of the types of chemical reactions that would be necessary for a life form to exist. (and I'm not 100% sure that Silicon was a true possibility.. it seems that it came along with an "unlikely".) Nonetheless, life forms have been found at volcanic vents in the ocean that are surviving based on sulfur rather than oxygen. It's probably possible for lifeforms to evolve in an atmosphere of sulfur dioxide.
The biggest problem though is narrowing down our definition of what is a life form. Is a robot a life form? If the robot is designed to build new robots like itself, is it a life form then? (asexual reproduction?!) What if the robot had artificial intelligence? THEN is it a life form?
However, the article went into detail about what constitutes life - that is, what traits would something have to share with other life-forms to be considered life... or what subset of traits would constitute life.
The conclusion of that article was that life most likely required either carbon or silicon. Either Oxygen or Sulfur. and most likely, hydrogen. (I can't remember if Nitrogen was required). This is due to the nature of the types of chemical reactions that would be necessary for a life form to exist. (and I'm not 100% sure that Silicon was a true possibility.. it seems that it came along with an "unlikely".) Nonetheless, life forms have been found at volcanic vents in the ocean that are surviving based on sulfur rather than oxygen. It's probably possible for lifeforms to evolve in an atmosphere of sulfur dioxide.
The biggest problem though is narrowing down our definition of what is a life form. Is a robot a life form? If the robot is designed to build new robots like itself, is it a life form then? (asexual reproduction?!) What if the robot had artificial intelligence? THEN is it a life form?
