The alien mega structure planet isn't showing any signs of radio waves yet according to SETI.
Quote:
[Two different types of radio signals were sought: (1) Narrow-band transmissions, of order 1 Hz in width, that could be used as a “hailing signal” for societies wishing to betray their presence, and, (2) Broad-band signals produced by intense microwaves used to propel rockets servicing the megastructure.
Analysis of the Array data show no clear evidence for either type of signal between the frequencies of 1 and 10 GHz. This rules out omnidirectional transmitters of less than approximately 100 times today’s total terrestrial energy usage in the case of the narrow-band signals, and ten million times that usage for broad band emissions.
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http://www.seti.org/seti-institute/a...tar-kic8462852