Editing Astronomical radio source (section)

=== ET ===
{{Main|Search for extraterrestrial intelligence}}
Previous searches by various "search for extraterrestrial intelligence" (SETI) projects, starting with [[Project Ozma]], have looked for extraterrestrial communications in the form of narrow-band signals, analogous to our own radio stations. The [[Astropulse]] project argues that since we know nothing about how ET might communicate, this might be a bit closed-minded. Thus, the Astropulse Survey can be viewed{{by whom|date=October 2016}} as complementary to the narrow-band SETI@home survey as a by-product of the search for physical phenomena.{{citation needed|date=October 2016}}