No, NASA Did Not Release A Study On Aliens And Global Warming | Media Matters for America

The subhead of the Guardian article falsely claimed that the report was "for Nasa" and the paper has since issued a correction.

Indeed the report is not NASA research. Shawn Domagal-Goldman, the co-author of the paper who works at NASA, wrote yesterday:

This isn't a "NASA report." It's not work funded by NASA, nor is it work supported by NASA in other ways. It was just a fun paper written by a few friends, one of whom happens to have a NASA affiliation.
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Yes, I work at NASA. It's also true that I work at NASA Headquarters