技术签名

天文尺度上的技术或智能活动指标，为搜寻外星文明提供指引。

Articles about 技术签名

Space Weather
SETI May Have Missed Alien Calls

SETI May Have Missed Alien Calls
New SETI research shows space weather can smear and hide narrow alien radio beacons, meaning signals could arrive looking like noise. Scientists want to broaden search methods a...
Technology
3I/ATLAS Is Not an Alien Probe

3I/ATLAS Is Not an Alien Probe
Comet 3I/ATLAS—only the third confirmed interstellar object to visit our solar system—has been scanned by major radio and optical facilities; scientists report no signs of engin...
Space
CIA’s Cryptic Answer on 3I/ATLAS

CIA’s Cryptic Answer on 3I/ATLAS
The CIA issued a Glomar reply to a FOIA request about interstellar visitor 3I/ATLAS, prompting fresh debate about what intelligence agencies may quietly monitor even when NASA c...
Space
3I/ATLAS: Iceberg, Engine, or Enigma?

3I/ATLAS: Iceberg, Engine, or Enigma?
New observations of interstellar visitor 3I/ATLAS have revealed an odd chemistry, strange light-scattering and sunward jets — and a debate between natural explanations and calls...