Gulliver did discover extraterrestrial life,
On the NASA website an article about life on Mars was published on the 24 January 2014. In the article we found the following quote:
"The research, published in the journal Science, was led by Ray Arvidson, Opportunity deputy principal investigator. According to Arvidson, the new rock samples are older than pervious samples collected by Opportunity, giving researchers a look further back into Mars’ past. Arvidson said in a statement, “These rocks are older than any we examined earlier in the mission, and they reveal more favorable conditions for microbial life than any evidence previously examined by investigations with Opportunity.”"
1963 the Gulliver life detection system, after arriving on the moon or Mars the device injects three sticky strings witch are then reeled back carrying particles of soil. The device preforms chemical analysis whether micro organisms are present. (artistic presentation 1963)