The Earth is already anomalously bright in the radio part of the spectrum if the trend continues, we could become readily detectable by any advanced civilisation with the right technology”.Įssentially, right now, only life forms with superior intelligence to our own are likely to be tuning into our radio waves.īut as we continue to put more powerful broadband systems on Earth, the likelihood of other beings detecting human life might well increase. “Current estimates suggest we will have more than one hundred thousand satellites in low Earth orbit and beyond before the end of the decade. While each system represents relatively low radio powers individually, the integrated spectrum of billions of these devices is substantial. “Although it’s true we have fewer powerful TV and radio transmitters today, the proliferation of mobile communication systems around the world is profound. “I’ve heard many colleagues suggest that the Earth has become increasingly radio quiet in recent years - a claim that I always contested,” Professor Mike Garrett, Director of Jodrell Bank Centre for Astrophysics at the University of Manchester and team leader on the project, said in a statement. The journal gives an in-depth account of the abstract the team were working from - but, essentially they generated models that would show them the Earth’s mobile radio signature and could provide information about what alien civilisations might detect from various nearby stars, including Barnard's Star (six light years away from Earth). The complete research was published in the Monthly Notices of the Royal Astronomical Society journal, which explains that the scientists involved created a model of the leakage using publicly available data of mobile tower locations. ![]() And it’s long been speculated as to whether the radio waves that have been leaked eventually might make it to our nearby planets. If the waves do make it to the ionosphere, we have what is essentially called a “leakage”. They then travel to the ionosphere (where the planet’s atmosphere and space converge) and some travel onwards to space, while others are absorbed or reflected and essentially continue to bounce around the Earth.
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