Timeline for Is there a scientific explanation as to why aliens should look similar to us?
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| Sep 30, 2014 at 22:04 | comment | added | mechalynx | Just a clarification: Panspermia does not imply a habitable body carrying microorganisms or genetic material, nor does it imply artificial implantation. In fact, a very plausible version I've read uses the existing discovery of extremophiles on meteorite rock and nebular conditions as a means of panspermia - the meteorites aren't really what you'd call "habitable" nor are they placed there. | |
| Sep 28, 2014 at 15:06 | history | answered | DonyorM | CC BY-SA 3.0 |