Science In Action

A mystery satellite has been jamming GPS in Europe

Oct 2, 2025
Todd Humphreys, a space radio communications expert, reveals the intriguing possibility of a mysterious satellite disrupting GPS signals in Europe, suggesting an accidental source, not necessarily malevolent. Liana Zanette, a behavioral ecologist, shares eye-opening findings about wolves' fear of humans, showcasing how their behavior shifts in response to human sounds. Meanwhile, Tessa Alexanian discusses AI-designed DNA's potential dangers, emphasizing biosecurity challenges in detecting harmful protein sequences, highlighting an urgent need for better screening methods.
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INSIGHT

GPS Interference Can Come From Space

  • Space-based transmitters can also interfere with GNSS, not just ground or airborne jammers.
  • Todd Humphreys' team found synchronized short jamming events across many distant stations since 2019.
INSIGHT

Patterns Point To A Small Set Of Satellites

  • The spatial and temporal pattern of outages narrowed suspects to geostationary or Molniya satellites.
  • The team observed a recurring unified fingerprint across roughly 72 strong events since 2019.
ADVICE

Use Distributed Monitoring And Direct Verification

  • Monitor GNSS with many widely distributed receivers to detect transient space-based interference quickly.
  • Contact satellite operators and use large ground dishes to verify offending satellites when patterns point to a candidate.
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