SETI / Search for Extraterrestrial Intelligence

SETI enters the wiki through sp.01 宇宙：卡尔·萨根的星辰大海和人类梦想 as the organized search for extraterrestrial intelligence using radio telescopes and pattern-seeking across cosmic signals. The source emphasizes that [[CarlSagan|Carl Sagan]] did not merely enjoy alien-life speculation; he treated the possibility as a serious scientific question worth listening, modeling, messaging, and arguing about.

The episode links SETI to Sagan’s wider project: Mars and Jupiter-life speculation, Arecibo-style messages, the [[VoyagerGoldenRecord|Voyager golden record]], and [[ContactNovel|《接触》 / Contact]] all turn the question of extraterrestrial life into a blend of evidence, imagination, engineering, and civilization self-description.

Key Claims

• SETI is not UFO credulity in this source; it is a disciplined search for signals and structure.
• The project keeps extraterrestrial life possible while requiring evidence and interpretation before belief.
• Sagan’s SETI work shows how Scientific Skepticism and wonder can share the same project.
• The source treats SETI as both a scientific question and a narrative resource for science fiction, especially Contact.

Connections

• [[CarlSagan|Carl Sagan]] - public-science and SETI advocate in the source.
• [[ContactNovel|《接触》 / Contact]] - fictional extension of SETI logic.
• Voyager Golden Record - neighboring outbound-message and time-capsule project.
• Applied Astrobiology - adjacent life-beyond-Earth concept already present in the wiki.
• Scientific Skepticism, Rational Humility, and Open Extraterrestrial Civilization Imagination - method and imagination frames.