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Aliens 200 Light-Years Away Could Detect Our Airports, Scientists Say

GREATER LONDON, ENGLAND, JUL 8 – Airport radar systems emit 2 quadrillion watts of signals detectable up to 200 light-years away, potentially revealing Earth's location to advanced alien civilizations, researchers say.

  • A new study suggests that intelligent extraterrestrial life could detect Earth's airports, including Heathrow, Gatwick, and JFK, as signs of human civilization from 200 light-years away.
  • Airport radar systems emit a powerful radio signal of 2x10^15 watts, strong enough to be detected by advanced radio telescopes.
  • Lead researcher Ramiro Caisse Saide stated that these signals would appear 'clearly artificial' to observers using powerful telescopes from space.
  • Co-Researcher Professor Michael Garrett emphasized that understanding how our signals travel can help protect the radio spectrum and benefit various fields like astronomy and planetary defense.
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Phys.org broke the news in United Kingdom on Tuesday, July 8, 2025.
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