BBC Sky at Night Magazine on MSN
Aliens could detect our airports. Scientists say radar signals could reveal our presence across the galaxy
Planet Earth could be giving out its own signals, which could in turn be detected by distant astronomers on an alien planet ...
A new study found that the radar systems used by civilian airports and military operations may be potentially revealing Earth's existence to "extraterrestrial observers", or aliens. Radar systems emit ...
Airport radar systems used daily at major hubs including London Heathrow and New York's JFK could be unintentionally ...
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