'I believe that there's every chance advanced civilizations are out there,' said researcher Nalini Heeralall-Issur.
From HD 95735—a red dwarf located 8.3 light-years away—meanwhile, the main contribution of these signals would come mainly from the east coast of China, followed by the west and east coasts of North America.
The study also highlights that the leakage signature of Earth has changed significantly over a relatively short time scale. In the 1970s, the radio emissions from TV transmitters and radar were dominated by a few thousand, very powerful transmitters located in specific areas of the planet—mostly Western Europe and North America.
"Whether they could make sense of the data is another question—but surely digital data with video and images would make some kind of sense to them. Also maths. Language would be more difficult to decode," he said. In addition, the researchers said the Earth is getting brighter in terms of radio leakage and that trend looks set to continue for the decades ahead.
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