If an extra-terrestrial civilisation saw the Earth, what technosignatures could they pick up? What could they learn about life on our planet and human civilisation in particular? I'm discussing that with Dr Michael Garrett who is the Director of Jodrell Bank Centre for Astrophysics.
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? Simulation of the Earth’s radio-leakage from mobile towers as seen from selected nearby stellar systems:
https://academic.oup.com/mnras/article/522/2/2393/7028804
00:00 Intro
02:11 Biosignatures in modern Astronomy
06:46 Technosignatures VS biosignatures
13:07 Loudest technosignatures of Earth
18:27 Earth from the perspective of aliens
32:31 Satellite constellations
38:00 Going into wires
42:49 Leaked transmissions
46:09 Becoming an alien hunter
? VIDEO VERSION
https://youtu.be/rkZM9yHY8z0
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