As I have not seen this question answered and, following the rules: https://stackoverflow.blog/2011/07/01/its-ok-to-ask-and-answer-your-own-questions/ , I would like to answer this important question.

As you know, by 2027 we expect to have the biggest radio telescope already working: the Square Kilometre Array.

According to the former Interim Director General of the SKA project, Michiel van Haarlam, it will be possible to detect the radar of an extraterrestrial airport 60 light years away, once the initial stage of the project is completed.

However, a recent study also points out that the SKA could detect extraterrestrial airports 200 light years away.

Source: https://www.youtube.com/watch?v=ayqyb8XCtE0

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    $\begingroup$ So what's your question? If the study points that out, then yes? $\endgroup$ – AtmosphericPrisonEscape Nov 17 '19 at 0:56
  • $\begingroup$ Yes, we're encouraged to answer our own questions, but you still have to follow the usual question & answer format. Please post the answer in the Answers section. $\endgroup$ – PM 2Ring Nov 17 '19 at 11:43

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