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"If we are planning on colonizing other planets in the future, why is NASA against "contaminating" other worlds with Earth-life?"
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Space Interferometry Mission
External Link: SIM Planet Quest
January 19, 2008
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![Past Missions](https://webarchive.library.unt.edu/eot2008/20090514172311im_/http://astrobiology.nasa.gov/img/text/hd_past_missions.gif)
External Link: SIM Planet Quest