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- ...roach of the drake equation parameters |journal=[[International Journal of Astrobiology]] |volume=11 |issue=2 |pages=103–108 |arxiv=1112.1506 |bibcode=2012IJAsB..1 ...on-revisited-part-i/ | title=The Drake Equation Revisited: Part I | work=[[Astrobiology Magazine]] | date=29 September 2003 | access-date=20 May 2017}}</ref> ...68 KB (9,737 words) - 01:45, 30 January 2023
- ...aterrestrial intelligence]], including the founding of [[SETI]],<ref name="Astrobiology"/><ref name="ActaAstronautica"/><ref name="ScienceET"/><ref name="ScienceMe {{Portal|Astrobiology}} ...9 KB (1,149 words) - 21:48, 31 August 2019