positions above than 3th rise-and-fall-of-alien-civilizations-in-our-own-galaxy.com

#	Keyword	Results	Change	Check Date
12	protect or threaten the galaxy	4 540 000	2	2014-01-09
15	where did life first spark into being?	3 510 000	-9	2012-06-22
37	first et contact	360 000 000	0	2014-07-21
48	star system civilization generators	4 560 000	-11	2014-04-13