RE: Comets could have seeded life on Earth
March 11, 2013 at 9:26 pm
(This post was last modified: March 11, 2013 at 9:33 pm by Anomalocaris.)
There is nothing fundamentally new here. The basic concept is chemistry for formation amino acids exists either in environment we can directly observe to exist, or can easily and convincingly deduce deduce to exist, which then can be connected to locations on earth where conditions can reasonably be deduced to have been stastitiscally favorable to assembly of such amino acids first into a self replicating formation, then into a package which can mor efficiently assemble the material and energy needed to further this replication.
The only major effect is to point out a part of abiogenesis process which is still not only still in operation and subject to direct observation, but also indisputably had always been in operation continously throughout earth's history.
Other parts of abiogenesis runs into the statistically issue of why is there no evidence of life arriving independently multiple times on earth, resulting in totally incompatible biochemistry and evolutionarily totally separate lineages of life. To this we have only a partial answer.
If they say actual living cells came here on comet dust, that would be different.
The only major effect is to point out a part of abiogenesis process which is still not only still in operation and subject to direct observation, but also indisputably had always been in operation continously throughout earth's history.
Other parts of abiogenesis runs into the statistically issue of why is there no evidence of life arriving independently multiple times on earth, resulting in totally incompatible biochemistry and evolutionarily totally separate lineages of life. To this we have only a partial answer.
If they say actual living cells came here on comet dust, that would be different.
